Finding the Third Proportional to 72,701.25 and 156,859.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,701.25 : 156,859.50 = 156,859.50 : x
2. Step 2: Convert to fraction form
   72,701.25/156,859.50 = 156,859.50/x
3. Step 3: Cross multiply
   72,701.25x = 156,859.50 × 156,859.50
4. Step 4: Simplify right side
   72,701.25x = 24,604,902,740.25
5. Step 5: Solve for x
   x = 24,604,902,740.25/72,701.25
6. Step 6: Final answer
   x = 338,438.51