Finding the Third Proportional to 71,239.50 and 105,761.25

Step by Step Solution

1. Step 1: Write the proportion equation
   71,239.50 : 105,761.25 = 105,761.25 : x
2. Step 2: Convert to fraction form
   71,239.50/105,761.25 = 105,761.25/x
3. Step 3: Cross multiply
   71,239.50x = 105,761.25 × 105,761.25
4. Step 4: Simplify right side
   71,239.50x = 11,185,442,001.56
5. Step 5: Solve for x
   x = 11,185,442,001.56/71,239.50
6. Step 6: Final answer
   x = 157,011.80