Finding the Third Proportional to 267,718.50 and 557,631

Step by Step Solution

1. Step 1: Write the proportion equation
   267,718.50 : 557,631 = 557,631 : x
2. Step 2: Convert to fraction form
   267,718.50/557,631 = 557,631/x
3. Step 3: Cross multiply
   267,718.50x = 557,631 × 557,631
4. Step 4: Simplify right side
   267,718.50x = 310,952,332,161
5. Step 5: Solve for x
   x = 310,952,332,161/267,718.50
6. Step 6: Final answer
   x = 1,161,489.89