Finding the Third Proportional to 72,610.50 and 108,910.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,610.50 : 108,910.50 = 108,910.50 : x
2. Step 2: Convert to fraction form
   72,610.50/108,910.50 = 108,910.50/x
3. Step 3: Cross multiply
   72,610.50x = 108,910.50 × 108,910.50
4. Step 4: Simplify right side
   72,610.50x = 11,861,497,010.25
5. Step 5: Solve for x
   x = 11,861,497,010.25/72,610.50
6. Step 6: Final answer
   x = 163,357.88