Finding the Third Proportional to 33,490.75 and 72,239.50

Step by Step Solution

1. Step 1: Write the proportion equation
   33,490.75 : 72,239.50 = 72,239.50 : x
2. Step 2: Convert to fraction form
   33,490.75/72,239.50 = 72,239.50/x
3. Step 3: Cross multiply
   33,490.75x = 72,239.50 × 72,239.50
4. Step 4: Simplify right side
   33,490.75x = 5,218,545,360.25
5. Step 5: Solve for x
   x = 5,218,545,360.25/33,490.75
6. Step 6: Final answer
   x = 155,820.50