Finding the Third Proportional to 2,736.28 and 3,899.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,736.28 : 3,899.39 = 3,899.39 : x
2. Step 2: Convert to fraction form
   2,736.28/3,899.39 = 3,899.39/x
3. Step 3: Cross multiply
   2,736.28x = 3,899.39 × 3,899.39
4. Step 4: Simplify right side
   2,736.28x = 15,205,247.25
5. Step 5: Solve for x
   x = 15,205,247.25/2,736.28
6. Step 6: Final answer
   x = 5,556.90