Finding the Third Proportional to 19,811,721 and 43,140,605

Step by Step Solution

1. Step 1: Write the proportion equation
   19,811,721 : 43,140,605 = 43,140,605 : x
2. Step 2: Convert to fraction form
   19,811,721/43,140,605 = 43,140,605/x
3. Step 3: Cross multiply
   19,811,721x = 43,140,605 × 43,140,605
4. Step 4: Simplify right side
   19,811,721x = 1,861,111,799,766,025
5. Step 5: Solve for x
   x = 1,861,111,799,766,025/19,811,721
6. Step 6: Final answer
   x = 93,939,935.85