Finding the Third Proportional to 3,591 and 5,389.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,591 : 5,389.88 = 5,389.88 : x
2. Step 2: Convert to fraction form
   3,591/5,389.88 = 5,389.88/x
3. Step 3: Cross multiply
   3,591x = 5,389.88 × 5,389.88
4. Step 4: Simplify right side
   3,591x = 29,050,752.52
5. Step 5: Solve for x
   x = 29,050,752.52/3,591
6. Step 6: Final answer
   x = 8,089.88