Finding the Third Proportional to 20,123,990 and 31,381,724

Step by Step Solution

1. Step 1: Write the proportion equation
   20,123,990 : 31,381,724 = 31,381,724 : x
2. Step 2: Convert to fraction form
   20,123,990/31,381,724 = 31,381,724/x
3. Step 3: Cross multiply
   20,123,990x = 31,381,724 × 31,381,724
4. Step 4: Simplify right side
   20,123,990x = 984,812,601,212,176
5. Step 5: Solve for x
   x = 984,812,601,212,176/20,123,990
6. Step 6: Final answer
   x = 48,937,243.62