Finding the Third Proportional to 2,726.79 and 4,086.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,726.79 : 4,086.39 = 4,086.39 : x
2. Step 2: Convert to fraction form
   2,726.79/4,086.39 = 4,086.39/x
3. Step 3: Cross multiply
   2,726.79x = 4,086.39 × 4,086.39
4. Step 4: Simplify right side
   2,726.79x = 16,698,556.42
5. Step 5: Solve for x
   x = 16,698,556.42/2,726.79
6. Step 6: Final answer
   x = 6,123.89