Finding the Third Proportional to 20,123,991 and 31,381,730

Step by Step Solution

1. Step 1: Write the proportion equation
   20,123,991 : 31,381,730 = 31,381,730 : x
2. Step 2: Convert to fraction form
   20,123,991/31,381,730 = 31,381,730/x
3. Step 3: Cross multiply
   20,123,991x = 31,381,730 × 31,381,730
4. Step 4: Simplify right side
   20,123,991x = 984,812,977,792,900
5. Step 5: Solve for x
   x = 984,812,977,792,900/20,123,991
6. Step 6: Final answer
   x = 48,937,259.90