Finding the Third Proportional to 157,879.50 and 247,380

Step by Step Solution

1. Step 1: Write the proportion equation
   157,879.50 : 247,380 = 247,380 : x
2. Step 2: Convert to fraction form
   157,879.50/247,380 = 247,380/x
3. Step 3: Cross multiply
   157,879.50x = 247,380 × 247,380
4. Step 4: Simplify right side
   157,879.50x = 61,196,864,400
5. Step 5: Solve for x
   x = 61,196,864,400/157,879.50
6. Step 6: Final answer
   x = 387,617.55