Finding the Third Proportional to 267,018 and 413,311.50

Step by Step Solution

1. Step 1: Write the proportion equation
   267,018 : 413,311.50 = 413,311.50 : x
2. Step 2: Convert to fraction form
   267,018/413,311.50 = 413,311.50/x
3. Step 3: Cross multiply
   267,018x = 413,311.50 × 413,311.50
4. Step 4: Simplify right side
   267,018x = 170,826,396,032.25
5. Step 5: Solve for x
   x = 170,826,396,032.25/267,018
6. Step 6: Final answer
   x = 639,756.11