Finding the Third Proportional to 172,804.50 and 359,397

Step by Step Solution

1. Step 1: Write the proportion equation
   172,804.50 : 359,397 = 359,397 : x
2. Step 2: Convert to fraction form
   172,804.50/359,397 = 359,397/x
3. Step 3: Cross multiply
   172,804.50x = 359,397 × 359,397
4. Step 4: Simplify right side
   172,804.50x = 129,166,203,609
5. Step 5: Solve for x
   x = 129,166,203,609/172,804.50
6. Step 6: Final answer
   x = 747,470.14