Finding the Third Proportional to 486 and 1,132.31

Step by Step Solution

1. Step 1: Write the proportion equation
   486 : 1,132.31 = 1,132.31 : x
2. Step 2: Convert to fraction form
   486/1,132.31 = 1,132.31/x
3. Step 3: Cross multiply
   486x = 1,132.31 × 1,132.31
4. Step 4: Simplify right side
   486x = 1,282,131.60
5. Step 5: Solve for x
   x = 1,282,131.60/486
6. Step 6: Final answer
   x = 2,638.13