Finding the Third Proportional to 172,522 and 375,419

Step by Step Solution

1. Step 1: Write the proportion equation
   172,522 : 375,419 = 375,419 : x
2. Step 2: Convert to fraction form
   172,522/375,419 = 375,419/x
3. Step 3: Cross multiply
   172,522x = 375,419 × 375,419
4. Step 4: Simplify right side
   172,522x = 140,939,425,561
5. Step 5: Solve for x
   x = 140,939,425,561/172,522
6. Step 6: Final answer
   x = 816,935.96