Finding the Third Proportional to 147,792 and 220,500

Step by Step Solution

1. Step 1: Write the proportion equation
   147,792 : 220,500 = 220,500 : x
2. Step 2: Convert to fraction form
   147,792/220,500 = 220,500/x
3. Step 3: Cross multiply
   147,792x = 220,500 × 220,500
4. Step 4: Simplify right side
   147,792x = 48,620,250,000
5. Step 5: Solve for x
   x = 48,620,250,000/147,792
6. Step 6: Final answer
   x = 328,977.55