Finding the Third Proportional to 4,485,908 and 9,729,004

Step by Step Solution

1. Step 1: Write the proportion equation
   4,485,908 : 9,729,004 = 9,729,004 : x
2. Step 2: Convert to fraction form
   4,485,908/9,729,004 = 9,729,004/x
3. Step 3: Cross multiply
   4,485,908x = 9,729,004 × 9,729,004
4. Step 4: Simplify right side
   4,485,908x = 94,653,518,832,016
5. Step 5: Solve for x
   x = 94,653,518,832,016/4,485,908
6. Step 6: Final answer
   x = 21,100,191.72