Finding the Third Proportional to 686,874 and 1,491,972

Step by Step Solution

1. Step 1: Write the proportion equation
   686,874 : 1,491,972 = 1,491,972 : x
2. Step 2: Convert to fraction form
   686,874/1,491,972 = 1,491,972/x
3. Step 3: Cross multiply
   686,874x = 1,491,972 × 1,491,972
4. Step 4: Simplify right side
   686,874x = 2,225,980,448,784
5. Step 5: Solve for x
   x = 2,225,980,448,784/686,874
6. Step 6: Final answer
   x = 3,240,740.59