Finding the Third Proportional to 489,760.31 and 756,804

Step by Step Solution

1. Step 1: Write the proportion equation
   489,760.31 : 756,804 = 756,804 : x
2. Step 2: Convert to fraction form
   489,760.31/756,804 = 756,804/x
3. Step 3: Cross multiply
   489,760.31x = 756,804 × 756,804
4. Step 4: Simplify right side
   489,760.31x = 572,752,294,416
5. Step 5: Solve for x
   x = 572,752,294,416/489,760.31
6. Step 6: Final answer
   x = 1,169,454.28