Finding the Third Proportional to 687,192 and 1,392,852

Step by Step Solution

1. Step 1: Write the proportion equation
   687,192 : 1,392,852 = 1,392,852 : x
2. Step 2: Convert to fraction form
   687,192/1,392,852 = 1,392,852/x
3. Step 3: Cross multiply
   687,192x = 1,392,852 × 1,392,852
4. Step 4: Simplify right side
   687,192x = 1,940,036,693,904
5. Step 5: Solve for x
   x = 1,940,036,693,904/687,192
6. Step 6: Final answer
   x = 2,823,136.32