# Math Help - ap and gp

1. ## ap and gp

if the number a, b, c are in GP and AMs between a,b and b,c are in x and y respectively, then prove that (a/x) + (c/y) = 2
my incomplete soln-
b/a = c/b
or, b^2 = ac

2. Originally Posted by saha.subham
if the number a, b, c are in GP and AMs between a,b and b,c are in x and y respectively, then prove that (a/x) + (c/y) = 2
my incomplete soln-
b/a = c/b
or, b^2 = ac
also use x=(a+b)/2 and y=(b+c)/2