Finding the Third Proportional to 5,454.56 and 8,650.69

Step by Step Solution

1. Step 1: Write the proportion equation
   5,454.56 : 8,650.69 = 8,650.69 : x
2. Step 2: Convert to fraction form
   5,454.56/8,650.69 = 8,650.69/x
3. Step 3: Cross multiply
   5,454.56x = 8,650.69 × 8,650.69
4. Step 4: Simplify right side
   5,454.56x = 74,834,394.22
5. Step 5: Solve for x
   x = 74,834,394.22/5,454.56
6. Step 6: Final answer
   x = 13,719.60