Finding the Third Proportional to 1,399.78 and 3,026.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,399.78 : 3,026.74 = 3,026.74 : x
2. Step 2: Convert to fraction form
   1,399.78/3,026.74 = 3,026.74/x
3. Step 3: Cross multiply
   1,399.78x = 3,026.74 × 3,026.74
4. Step 4: Simplify right side
   1,399.78x = 9,161,168.27
5. Step 5: Solve for x
   x = 9,161,168.27/1,399.78
6. Step 6: Final answer
   x = 6,544.71