Finding the Third Proportional to 686,781 and 1,491,738

Step by Step Solution

1. Step 1: Write the proportion equation
   686,781 : 1,491,738 = 1,491,738 : x
2. Step 2: Convert to fraction form
   686,781/1,491,738 = 1,491,738/x
3. Step 3: Cross multiply
   686,781x = 1,491,738 × 1,491,738
4. Step 4: Simplify right side
   686,781x = 2,225,282,260,644
5. Step 5: Solve for x
   x = 2,225,282,260,644/686,781
6. Step 6: Final answer
   x = 3,240,162.82