Finding the Third Proportional to 590,826 and 1,288,588

Step by Step Solution

1. Step 1: Write the proportion equation
   590,826 : 1,288,588 = 1,288,588 : x
2. Step 2: Convert to fraction form
   590,826/1,288,588 = 1,288,588/x
3. Step 3: Cross multiply
   590,826x = 1,288,588 × 1,288,588
4. Step 4: Simplify right side
   590,826x = 1,660,459,033,744
5. Step 5: Solve for x
   x = 1,660,459,033,744/590,826
6. Step 6: Final answer
   x = 2,810,402.78