Finding the Third Proportional to 149,851.69 and 321,024.94

Step by Step Solution

1. Step 1: Write the proportion equation
   149,851.69 : 321,024.94 = 321,024.94 : x
2. Step 2: Convert to fraction form
   149,851.69/321,024.94 = 321,024.94/x
3. Step 3: Cross multiply
   149,851.69x = 321,024.94 × 321,024.94
4. Step 4: Simplify right side
   149,851.69x = 103,057,010,496.88
5. Step 5: Solve for x
   x = 103,057,010,496.88/149,851.69
6. Step 6: Final answer
   x = 687,726.73