Finding the Third Proportional to 1,226,708 and 2,640,040

Step by Step Solution

1. Step 1: Write the proportion equation
   1,226,708 : 2,640,040 = 2,640,040 : x
2. Step 2: Convert to fraction form
   1,226,708/2,640,040 = 2,640,040/x
3. Step 3: Cross multiply
   1,226,708x = 2,640,040 × 2,640,040
4. Step 4: Simplify right side
   1,226,708x = 6,969,811,201,600
5. Step 5: Solve for x
   x = 6,969,811,201,600/1,226,708
6. Step 6: Final answer
   x = 5,681,719.86