Finding the Third Proportional to 3,671.25 and 5,515.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,671.25 : 5,515.50 = 5,515.50 : x
2. Step 2: Convert to fraction form
   3,671.25/5,515.50 = 5,515.50/x
3. Step 3: Cross multiply
   3,671.25x = 5,515.50 × 5,515.50
4. Step 4: Simplify right side
   3,671.25x = 30,420,740.25
5. Step 5: Solve for x
   x = 30,420,740.25/3,671.25
6. Step 6: Final answer
   x = 8,286.21