Finding the Third Proportional to 31,272.75 and 68,385.94

Step by Step Solution

1. Step 1: Write the proportion equation
   31,272.75 : 68,385.94 = 68,385.94 : x
2. Step 2: Convert to fraction form
   31,272.75/68,385.94 = 68,385.94/x
3. Step 3: Cross multiply
   31,272.75x = 68,385.94 × 68,385.94
4. Step 4: Simplify right side
   31,272.75x = 4,676,636,447.75
5. Step 5: Solve for x
   x = 4,676,636,447.75/31,272.75
6. Step 6: Final answer
   x = 149,543.50