Finding the Third Proportional to 111,230 and 172,375

Step by Step Solution

1. Step 1: Write the proportion equation
   111,230 : 172,375 = 172,375 : x
2. Step 2: Convert to fraction form
   111,230/172,375 = 172,375/x
3. Step 3: Cross multiply
   111,230x = 172,375 × 172,375
4. Step 4: Simplify right side
   111,230x = 29,713,140,625
5. Step 5: Solve for x
   x = 29,713,140,625/111,230
6. Step 6: Final answer
   x = 267,132.43