Finding the Third Proportional to 480.75 and 1,018.78

Step by Step Solution

1. Step 1: Write the proportion equation
   480.75 : 1,018.78 = 1,018.78 : x
2. Step 2: Convert to fraction form
   480.75/1,018.78 = 1,018.78/x
3. Step 3: Cross multiply
   480.75x = 1,018.78 × 1,018.78
4. Step 4: Simplify right side
   480.75x = 1,037,915.24
5. Step 5: Solve for x
   x = 1,037,915.24/480.75
6. Step 6: Final answer
   x = 2,158.95