Finding the Third Proportional to 1,199,826 and 1,687,470

Step by Step Solution

1. Step 1: Write the proportion equation
   1,199,826 : 1,687,470 = 1,687,470 : x
2. Step 2: Convert to fraction form
   1,199,826/1,687,470 = 1,687,470/x
3. Step 3: Cross multiply
   1,199,826x = 1,687,470 × 1,687,470
4. Step 4: Simplify right side
   1,199,826x = 2,847,555,000,900
5. Step 5: Solve for x
   x = 2,847,555,000,900/1,199,826
6. Step 6: Final answer
   x = 2,373,306.63