Finding the Third Proportional to 80,355.50 and 172,804

Step by Step Solution

1. Step 1: Write the proportion equation
   80,355.50 : 172,804 = 172,804 : x
2. Step 2: Convert to fraction form
   80,355.50/172,804 = 172,804/x
3. Step 3: Cross multiply
   80,355.50x = 172,804 × 172,804
4. Step 4: Simplify right side
   80,355.50x = 29,861,222,416
5. Step 5: Solve for x
   x = 29,861,222,416/80,355.50
6. Step 6: Final answer
   x = 371,613.92