Finding the Third Proportional to 686,568 and 1,435,912

Step by Step Solution

1. Step 1: Write the proportion equation
   686,568 : 1,435,912 = 1,435,912 : x
2. Step 2: Convert to fraction form
   686,568/1,435,912 = 1,435,912/x
3. Step 3: Cross multiply
   686,568x = 1,435,912 × 1,435,912
4. Step 4: Simplify right side
   686,568x = 2,061,843,271,744
5. Step 5: Solve for x
   x = 2,061,843,271,744/686,568
6. Step 6: Final answer
   x = 3,003,115.89