Finding the Third Proportional to 20,123,985 and 31,381,718.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,123,985 : 31,381,718.50 = 31,381,718.50 : x
2. Step 2: Convert to fraction form
   20,123,985/31,381,718.50 = 31,381,718.50/x
3. Step 3: Cross multiply
   20,123,985x = 31,381,718.50 × 31,381,718.50
4. Step 4: Simplify right side
   20,123,985x = 984,812,256,013,242.25
5. Step 5: Solve for x
   x = 984,812,256,013,242.25/20,123,985
6. Step 6: Final answer
   x = 48,937,238.62