question_answer

X, Y and Z are the first, second and fourth terms of a proportion. Which one of the following is correct about the third term?

A)  \[\frac{x\,\times \,y}{z}\]                       

B)  \[\frac{x\,\times \,z}{y}\]

C)  \[x\,\times \,y\,\times \,z\]                       

D)  All of these

E)  None of these