Finding the Third Proportional to 149,916.50 and 322,065

Step by Step Solution

1. Step 1: Write the proportion equation
   149,916.50 : 322,065 = 322,065 : x
2. Step 2: Convert to fraction form
   149,916.50/322,065 = 322,065/x
3. Step 3: Cross multiply
   149,916.50x = 322,065 × 322,065
4. Step 4: Simplify right side
   149,916.50x = 103,725,864,225
5. Step 5: Solve for x
   x = 103,725,864,225/149,916.50
6. Step 6: Final answer
   x = 691,890.91