Finding the Third Proportional to 162,749 and 251,499

Step by Step Solution

1. Step 1: Write the proportion equation
   162,749 : 251,499 = 251,499 : x
2. Step 2: Convert to fraction form
   162,749/251,499 = 251,499/x
3. Step 3: Cross multiply
   162,749x = 251,499 × 251,499
4. Step 4: Simplify right side
   162,749x = 63,251,747,001
5. Step 5: Solve for x
   x = 63,251,747,001/162,749
6. Step 6: Final answer
   x = 388,645.99