Finding the Third Proportional to 72,607.50 and 156,338.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,607.50 : 156,338.50 = 156,338.50 : x
2. Step 2: Convert to fraction form
   72,607.50/156,338.50 = 156,338.50/x
3. Step 3: Cross multiply
   72,607.50x = 156,338.50 × 156,338.50
4. Step 4: Simplify right side
   72,607.50x = 24,441,726,582.25
5. Step 5: Solve for x
   x = 24,441,726,582.25/72,607.50
6. Step 6: Final answer
   x = 336,628.12