Finding the Third Proportional to 149,882.06 and 321,131.25

Step by Step Solution

1. Step 1: Write the proportion equation
   149,882.06 : 321,131.25 = 321,131.25 : x
2. Step 2: Convert to fraction form
   149,882.06/321,131.25 = 321,131.25/x
3. Step 3: Cross multiply
   149,882.06x = 321,131.25 × 321,131.25
4. Step 4: Simplify right side
   149,882.06x = 103,125,279,726.56
5. Step 5: Solve for x
   x = 103,125,279,726.56/149,882.06
6. Step 6: Final answer
   x = 688,042.84