Finding the Third Proportional to 682,590 and 1,489,404

Step by Step Solution

1. Step 1: Write the proportion equation
   682,590 : 1,489,404 = 1,489,404 : x
2. Step 2: Convert to fraction form
   682,590/1,489,404 = 1,489,404/x
3. Step 3: Cross multiply
   682,590x = 1,489,404 × 1,489,404
4. Step 4: Simplify right side
   682,590x = 2,218,324,275,216
5. Step 5: Solve for x
   x = 2,218,324,275,216/682,590
6. Step 6: Final answer
   x = 3,249,863.42