Gravitational pull on a spaceship by Earth = that of the Moon

[physicsphan9]

Homework Statement

A rocket on its way to the moon passes through point P (along the line
connecting the Earth and the moon) where the gravitational pull by the
moon is exactly equal to the gravitational pull by the earth. Neglect the
motions of the moon and the Earth and find the distance of point P from the
earth's surface.

Me= 5.97 x 10^24 kg

Mm= 7.34 x 10^22 kg

r= 3.84 x 10^8 m

Homework Equations

fg=Gm1m2/r^2

The Attempt at a Solution

Honestly, don't even know where to start. Any help will be greatly appreciated.

 

[voko]

What's the pull by the Moon? By the Earth?