Finding the Third Proportional to 4,707,882 and 9,980,685

Step by Step Solution

1. Step 1: Write the proportion equation
   4,707,882 : 9,980,685 = 9,980,685 : x
2. Step 2: Convert to fraction form
   4,707,882/9,980,685 = 9,980,685/x
3. Step 3: Cross multiply
   4,707,882x = 9,980,685 × 9,980,685
4. Step 4: Simplify right side
   4,707,882x = 99,614,073,069,225
5. Step 5: Solve for x
   x = 99,614,073,069,225/4,707,882
6. Step 6: Final answer
   x = 21,158,999.54