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There would be no moon. There would be Large planet behind the Earth so the Earth would be between that Large planet and between Sun. This Large planet would orbit in the same way as Earth so they would always be in straight line (Sun-Earth-Large planet)
... the pull of sun and Large planet would stabilize Earth axis so it would not go crazy.
The one you describe with Earth between Sun and large planet is called L1. Unfortunately, the L1 point is unstable, and any small disturbance (like other planets in the system) will cause it to move out of this orbit. The L4 and L5 points are a better location, as they are stable against moderate disturbances.
Jupiter, of course, has Trojans and Greeks. So, putting a large planet such as Earth into L4 or L5 would likely open the planet up for numerous asteroid collisions. However, it is quite possible that a Trojan or Greek planet would mop up many of the other smaller asteroids, so by this time in evolution, most of the old asteroids would be gone. The planet would likely not occupy a single point in L3/L4, so it would likely follow an orbital path that takes it closer and farther from the host planet. Distances would still be quite long, but perhaps there would be significant tides on the closest approach to the large planet, and very small tides when farthest from the planet.
You see the L4 & L5 describe essentially a loop path, which is also why they are relatively stable. There may be a single point in the middle that wouldn't move, but many objects move somewhat.
Jupiter would be a bright point in the sky, easily visible before sunrise or after sunset (depending on whether Earth was at L4 or L5). However, if you placed the Earth at the newbielink:https://en.wikipedia.org/wiki/Jupiter_moons#Table [nonactive], Jupiter would be a giant sky-filling orb (I calculate that Jupiter would be 19 degrees across as seen from Io, hundreds of times bigger than the Moon as seen from Earth). If Earth were tidally locked to Jupiter, the day would be a rather tiring 42 hours - but with a natural siesta every noon.