Finding the Third Proportional to 3,589.31 and 5,515.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,589.31 : 5,515.59 = 5,515.59 : x
2. Step 2: Convert to fraction form
   3,589.31/5,515.59 = 5,515.59/x
3. Step 3: Cross multiply
   3,589.31x = 5,515.59 × 5,515.59
4. Step 4: Simplify right side
   3,589.31x = 30,421,774.42
5. Step 5: Solve for x
   x = 30,421,774.42/3,589.31
6. Step 6: Final answer
   x = 8,475.65