Finding the Third Proportional to 486 and 1,017.56

Step by Step Solution

1. Step 1: Write the proportion equation
   486 : 1,017.56 = 1,017.56 : x
2. Step 2: Convert to fraction form
   486/1,017.56 = 1,017.56/x
3. Step 3: Cross multiply
   486x = 1,017.56 × 1,017.56
4. Step 4: Simplify right side
   486x = 1,035,433.44
5. Step 5: Solve for x
   x = 1,035,433.44/486
6. Step 6: Final answer
   x = 2,130.52