Finding the Third Proportional to 20,123,958 and 31,381,680

Step by Step Solution

1. Step 1: Write the proportion equation
   20,123,958 : 31,381,680 = 31,381,680 : x
2. Step 2: Convert to fraction form
   20,123,958/31,381,680 = 31,381,680/x
3. Step 3: Cross multiply
   20,123,958x = 31,381,680 × 31,381,680
4. Step 4: Simplify right side
   20,123,958x = 984,809,839,622,400
5. Step 5: Solve for x
   x = 984,809,839,622,400/20,123,958
6. Step 6: Final answer
   x = 48,937,184.21