The numbers \(27\), \(x\), \(y\) are in geometric progression. If the sum of these three numbers is \(21\) calculate the possible values of \(x\) and \(y\).
The numbers \(27\), \(x\), \(y\) are in geometric progression. If the sum of these three numbers is \(21\) calculate the possible values of \(x\) and \(y\).