Just reposting.
A spaceship is on a straight-line path between the Earth and the Moon. At what distance from Earth is the net gravitational pull on the probe from the Earth and the moon zero? Mass of Earth = 6×10^24 kg. Mass of Moon = 7×10^22 kg. The distance from the sun to the moon is 150×10^6 km.
I need to confirm if my answer of 4678km is right. I used the centre of mass equations.... M1S1+M2S2/M1+M2.