Finding the Third Proportional to 1,640,626 and 2,567,798

Step by Step Solution

1. Step 1: Write the proportion equation
   1,640,626 : 2,567,798 = 2,567,798 : x
2. Step 2: Convert to fraction form
   1,640,626/2,567,798 = 2,567,798/x
3. Step 3: Cross multiply
   1,640,626x = 2,567,798 × 2,567,798
4. Step 4: Simplify right side
   1,640,626x = 6,593,586,568,804
5. Step 5: Solve for x
   x = 6,593,586,568,804/1,640,626
6. Step 6: Final answer
   x = 4,018,945.55