Finding the Third Proportional to 4,707,746 and 9,980,459

Step by Step Solution

1. Step 1: Write the proportion equation
   4,707,746 : 9,980,459 = 9,980,459 : x
2. Step 2: Convert to fraction form
   4,707,746/9,980,459 = 9,980,459/x
3. Step 3: Cross multiply
   4,707,746x = 9,980,459 × 9,980,459
4. Step 4: Simplify right side
   4,707,746x = 99,609,561,850,681
5. Step 5: Solve for x
   x = 99,609,561,850,681/4,707,746
6. Step 6: Final answer
   x = 21,158,652.54