Finding the Third Proportional to 3,591.38 and 5,518.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,591.38 : 5,518.88 = 5,518.88 : x
2. Step 2: Convert to fraction form
   3,591.38/5,518.88 = 5,518.88/x
3. Step 3: Cross multiply
   3,591.38x = 5,518.88 × 5,518.88
4. Step 4: Simplify right side
   3,591.38x = 30,457,981.27
5. Step 5: Solve for x
   x = 30,457,981.27/3,591.38
6. Step 6: Final answer
   x = 8,480.87