Finding the Third Proportional to 657,242 and 1,399,228

Step by Step Solution

1. Step 1: Write the proportion equation
   657,242 : 1,399,228 = 1,399,228 : x
2. Step 2: Convert to fraction form
   657,242/1,399,228 = 1,399,228/x
3. Step 3: Cross multiply
   657,242x = 1,399,228 × 1,399,228
4. Step 4: Simplify right side
   657,242x = 1,957,838,995,984
5. Step 5: Solve for x
   x = 1,957,838,995,984/657,242
6. Step 6: Final answer
   x = 2,978,870.79