Finding the Third Proportional to 172,801 and 247,105.50

Step by Step Solution

1. Step 1: Write the proportion equation
   172,801 : 247,105.50 = 247,105.50 : x
2. Step 2: Convert to fraction form
   172,801/247,105.50 = 247,105.50/x
3. Step 3: Cross multiply
   172,801x = 247,105.50 × 247,105.50
4. Step 4: Simplify right side
   172,801x = 61,061,128,130.25
5. Step 5: Solve for x
   x = 61,061,128,130.25/172,801
6. Step 6: Final answer
   x = 353,360.97