Finding the Third Proportional to 149,843.67 and 321,010.59

Step by Step Solution

1. Step 1: Write the proportion equation
   149,843.67 : 321,010.59 = 321,010.59 : x
2. Step 2: Convert to fraction form
   149,843.67/321,010.59 = 321,010.59/x
3. Step 3: Cross multiply
   149,843.67x = 321,010.59 × 321,010.59
4. Step 4: Simplify right side
   149,843.67x = 103,047,801,299.73
5. Step 5: Solve for x
   x = 103,047,801,299.73/149,843.67
6. Step 6: Final answer
   x = 687,702.06