Finding the Third Proportional to 2,479.78 and 2,749.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,479.78 : 2,749.78 = 2,749.78 : x
2. Step 2: Convert to fraction form
   2,479.78/2,749.78 = 2,749.78/x
3. Step 3: Cross multiply
   2,479.78x = 2,749.78 × 2,749.78
4. Step 4: Simplify right side
   2,479.78x = 7,561,296.92
5. Step 5: Solve for x
   x = 7,561,296.92/2,479.78
6. Step 6: Final answer
   x = 3,049.18