Finding the Third Proportional to 2,399.72 and 3,581.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,399.72 : 3,581.09 = 3,581.09 : x
2. Step 2: Convert to fraction form
   2,399.72/3,581.09 = 3,581.09/x
3. Step 3: Cross multiply
   2,399.72x = 3,581.09 × 3,581.09
4. Step 4: Simplify right side
   2,399.72x = 12,824,176.49
5. Step 5: Solve for x
   x = 12,824,176.49/2,399.72
6. Step 6: Final answer
   x = 5,344.03