Finding the Third Proportional to 158,739 and 239,728.50

Step by Step Solution

1. Step 1: Write the proportion equation
   158,739 : 239,728.50 = 239,728.50 : x
2. Step 2: Convert to fraction form
   158,739/239,728.50 = 239,728.50/x
3. Step 3: Cross multiply
   158,739x = 239,728.50 × 239,728.50
4. Step 4: Simplify right side
   158,739x = 57,469,753,712.25
5. Step 5: Solve for x
   x = 57,469,753,712.25/158,739
6. Step 6: Final answer
   x = 362,039.28