Finding the Third Proportional to 220,916.50 and 337,800

Step by Step Solution

1. Step 1: Write the proportion equation
   220,916.50 : 337,800 = 337,800 : x
2. Step 2: Convert to fraction form
   220,916.50/337,800 = 337,800/x
3. Step 3: Cross multiply
   220,916.50x = 337,800 × 337,800
4. Step 4: Simplify right side
   220,916.50x = 114,108,840,000
5. Step 5: Solve for x
   x = 114,108,840,000/220,916.50
6. Step 6: Final answer
   x = 516,524.75