Finding the Third Proportional to 5,515.50 and 12,002.75

Step by Step Solution

1. Step 1: Write the proportion equation
   5,515.50 : 12,002.75 = 12,002.75 : x
2. Step 2: Convert to fraction form
   5,515.50/12,002.75 = 12,002.75/x
3. Step 3: Cross multiply
   5,515.50x = 12,002.75 × 12,002.75
4. Step 4: Simplify right side
   5,515.50x = 144,066,007.56
5. Step 5: Solve for x
   x = 144,066,007.56/5,515.50
6. Step 6: Final answer
   x = 26,120.21