Finding the Third Proportional to 152,861.25 and 220,179

Step by Step Solution

1. Step 1: Write the proportion equation
   152,861.25 : 220,179 = 220,179 : x
2. Step 2: Convert to fraction form
   152,861.25/220,179 = 220,179/x
3. Step 3: Cross multiply
   152,861.25x = 220,179 × 220,179
4. Step 4: Simplify right side
   152,861.25x = 48,478,792,041
5. Step 5: Solve for x
   x = 48,478,792,041/152,861.25
6. Step 6: Final answer
   x = 317,142.45