Finding the Third Proportional to 31,490,920 and 47,072,436

Step by Step Solution

1. Step 1: Write the proportion equation
   31,490,920 : 47,072,436 = 47,072,436 : x
2. Step 2: Convert to fraction form
   31,490,920/47,072,436 = 47,072,436/x
3. Step 3: Cross multiply
   31,490,920x = 47,072,436 × 47,072,436
4. Step 4: Simplify right side
   31,490,920x = 2,215,814,230,974,096
5. Step 5: Solve for x
   x = 2,215,814,230,974,096/31,490,920
6. Step 6: Final answer
   x = 70,363,591.50