Finding the Third Proportional to 172,627.50 and 357,243

Step by Step Solution

1. Step 1: Write the proportion equation
   172,627.50 : 357,243 = 357,243 : x
2. Step 2: Convert to fraction form
   172,627.50/357,243 = 357,243/x
3. Step 3: Cross multiply
   172,627.50x = 357,243 × 357,243
4. Step 4: Simplify right side
   172,627.50x = 127,622,561,049
5. Step 5: Solve for x
   x = 127,622,561,049/172,627.50
6. Step 6: Final answer
   x = 739,294.50