Finding the Third Proportional to 2,728.13 and 4,087.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,728.13 : 4,087.69 = 4,087.69 : x
2. Step 2: Convert to fraction form
   2,728.13/4,087.69 = 4,087.69/x
3. Step 3: Cross multiply
   2,728.13x = 4,087.69 × 4,087.69
4. Step 4: Simplify right side
   2,728.13x = 16,709,189.10
5. Step 5: Solve for x
   x = 16,709,189.10/2,728.13
6. Step 6: Final answer
   x = 6,124.79