## To make {(A+n),(B+n),(C+n)} squares, (A,B,C) in geometrical progression

Find three numbers   $A, \; B, \; C$   in geometrical progression such that

each increased by a given number   $n$

$A \; + \; n$
$B \; + \; n$
$C \; + \; n$

is a square number.