Thread: geometric progression

isn't that middle term a mean?

im try:
2x, 3x, 8x
let x be the unknown number

consider m be the mean then 2x/m = m/8x
m = sq. rt of 16x^2
m = 4x this is the mean or middle.

so, 4x + 4 = 3x
x = - 4 ...
this substitute...

hope this is ryt . correct me if i'm wrong.. thanks

4x + 4 = 3x

It should be 4x = 3x + 4.