Finding the Third Proportional to 1,268,555 and 2,661,663

Step by Step Solution

1. Step 1: Write the proportion equation
   1,268,555 : 2,661,663 = 2,661,663 : x
2. Step 2: Convert to fraction form
   1,268,555/2,661,663 = 2,661,663/x
3. Step 3: Cross multiply
   1,268,555x = 2,661,663 × 2,661,663
4. Step 4: Simplify right side
   1,268,555x = 7,084,449,925,569
5. Step 5: Solve for x
   x = 7,084,449,925,569/1,268,555
6. Step 6: Final answer
   x = 5,584,661.23