Finding the Third Proportional to 686,826 and 1,504,872

Step by Step Solution

1. Step 1: Write the proportion equation
   686,826 : 1,504,872 = 1,504,872 : x
2. Step 2: Convert to fraction form
   686,826/1,504,872 = 1,504,872/x
3. Step 3: Cross multiply
   686,826x = 1,504,872 × 1,504,872
4. Step 4: Simplify right side
   686,826x = 2,264,639,736,384
5. Step 5: Solve for x
   x = 2,264,639,736,384/686,826
6. Step 6: Final answer
   x = 3,297,253.94