Finding the Third Proportional to 687,928 and 1,042,296

Step by Step Solution

1. Step 1: Write the proportion equation
   687,928 : 1,042,296 = 1,042,296 : x
2. Step 2: Convert to fraction form
   687,928/1,042,296 = 1,042,296/x
3. Step 3: Cross multiply
   687,928x = 1,042,296 × 1,042,296
4. Step 4: Simplify right side
   687,928x = 1,086,380,951,616
5. Step 5: Solve for x
   x = 1,086,380,951,616/687,928
6. Step 6: Final answer
   x = 1,579,207.35