Finding the Third Proportional to 590,830 and 1,288,596

Step by Step Solution

1. Step 1: Write the proportion equation
   590,830 : 1,288,596 = 1,288,596 : x
2. Step 2: Convert to fraction form
   590,830/1,288,596 = 1,288,596/x
3. Step 3: Cross multiply
   590,830x = 1,288,596 × 1,288,596
4. Step 4: Simplify right side
   590,830x = 1,660,479,651,216
5. Step 5: Solve for x
   x = 1,660,479,651,216/590,830
6. Step 6: Final answer
   x = 2,810,418.65