Finding the Third Proportional to 578,568 and 1,256,648

Step by Step Solution

1. Step 1: Write the proportion equation
   578,568 : 1,256,648 = 1,256,648 : x
2. Step 2: Convert to fraction form
   578,568/1,256,648 = 1,256,648/x
3. Step 3: Cross multiply
   578,568x = 1,256,648 × 1,256,648
4. Step 4: Simplify right side
   578,568x = 1,579,164,195,904
5. Step 5: Solve for x
   x = 1,579,164,195,904/578,568
6. Step 6: Final answer
   x = 2,729,435.77