Finding the Third Proportional to 686,858 and 1,510,744

Step by Step Solution

1. Step 1: Write the proportion equation
   686,858 : 1,510,744 = 1,510,744 : x
2. Step 2: Convert to fraction form
   686,858/1,510,744 = 1,510,744/x
3. Step 3: Cross multiply
   686,858x = 1,510,744 × 1,510,744
4. Step 4: Simplify right side
   686,858x = 2,282,347,433,536
5. Step 5: Solve for x
   x = 2,282,347,433,536/686,858
6. Step 6: Final answer
   x = 3,322,881.05