Finding the Third Proportional to 4,707,825 and 9,980,607

Step by Step Solution

1. Step 1: Write the proportion equation
   4,707,825 : 9,980,607 = 9,980,607 : x
2. Step 2: Convert to fraction form
   4,707,825/9,980,607 = 9,980,607/x
3. Step 3: Cross multiply
   4,707,825x = 9,980,607 × 9,980,607
4. Step 4: Simplify right side
   4,707,825x = 99,612,516,088,449
5. Step 5: Solve for x
   x = 99,612,516,088,449/4,707,825
6. Step 6: Final answer
   x = 21,158,925.00