Finding the Third Proportional to 590,800 and 1,288,536

Step by Step Solution

1. Step 1: Write the proportion equation
   590,800 : 1,288,536 = 1,288,536 : x
2. Step 2: Convert to fraction form
   590,800/1,288,536 = 1,288,536/x
3. Step 3: Cross multiply
   590,800x = 1,288,536 × 1,288,536
4. Step 4: Simplify right side
   590,800x = 1,660,325,023,296
5. Step 5: Solve for x
   x = 1,660,325,023,296/590,800
6. Step 6: Final answer
   x = 2,810,299.63