Finding the Third Proportional to 1,040.75 and 2,216.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,040.75 : 2,216.50 = 2,216.50 : x
2. Step 2: Convert to fraction form
   1,040.75/2,216.50 = 2,216.50/x
3. Step 3: Cross multiply
   1,040.75x = 2,216.50 × 2,216.50
4. Step 4: Simplify right side
   1,040.75x = 4,912,872.25
5. Step 5: Solve for x
   x = 4,912,872.25/1,040.75
6. Step 6: Final answer
   x = 4,720.51