Finding the Third Proportional to 489 and 1,018.41

Step by Step Solution

1. Step 1: Write the proportion equation
   489 : 1,018.41 = 1,018.41 : x
2. Step 2: Convert to fraction form
   489/1,018.41 = 1,018.41/x
3. Step 3: Cross multiply
   489x = 1,018.41 × 1,018.41
4. Step 4: Simplify right side
   489x = 1,037,151.29
5. Step 5: Solve for x
   x = 1,037,151.29/489
6. Step 6: Final answer
   x = 2,120.96