Finding the Third Proportional to 1,717,589 and 2,616,678

Step by Step Solution

1. Step 1: Write the proportion equation
   1,717,589 : 2,616,678 = 2,616,678 : x
2. Step 2: Convert to fraction form
   1,717,589/2,616,678 = 2,616,678/x
3. Step 3: Cross multiply
   1,717,589x = 2,616,678 × 2,616,678
4. Step 4: Simplify right side
   1,717,589x = 6,847,003,755,684
5. Step 5: Solve for x
   x = 6,847,003,755,684/1,717,589
6. Step 6: Final answer
   x = 3,986,404.06