Find the third proportional to 4 and 16?
Choose the correct choice:	A) 80	B) 12	C) 64	D) 78	E) 72
Formula = Third proportional = (b × b)/a   A = 4 and B = 16   (16 × 16)/ 4 = 256/4= 
<gadget id="calculator">256/4</gadget>
<output>64</output>
64   64
<result>C</result>
Find the third proportional to 4 and 16?