Finding the Third Proportional to 172,558 and 353,481.50

Step by Step Solution

1. Step 1: Write the proportion equation
   172,558 : 353,481.50 = 353,481.50 : x
2. Step 2: Convert to fraction form
   172,558/353,481.50 = 353,481.50/x
3. Step 3: Cross multiply
   172,558x = 353,481.50 × 353,481.50
4. Step 4: Simplify right side
   172,558x = 124,949,170,842.25
5. Step 5: Solve for x
   x = 124,949,170,842.25/172,558
6. Step 6: Final answer
   x = 724,099.55