Finding the Third Proportional to 2,739.45 and 3,876.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,739.45 : 3,876.30 = 3,876.30 : x
2. Step 2: Convert to fraction form
   2,739.45/3,876.30 = 3,876.30/x
3. Step 3: Cross multiply
   2,739.45x = 3,876.30 × 3,876.30
4. Step 4: Simplify right side
   2,739.45x = 15,025,738.03
5. Step 5: Solve for x
   x = 15,025,738.03/2,739.45
6. Step 6: Final answer
   x = 5,484.94