Finding the Third Proportional to 644,292 and 1,399,302

Step by Step Solution

1. Step 1: Write the proportion equation
   644,292 : 1,399,302 = 1,399,302 : x
2. Step 2: Convert to fraction form
   644,292/1,399,302 = 1,399,302/x
3. Step 3: Cross multiply
   644,292x = 1,399,302 × 1,399,302
4. Step 4: Simplify right side
   644,292x = 1,958,046,087,204
5. Step 5: Solve for x
   x = 1,958,046,087,204/644,292
6. Step 6: Final answer
   x = 3,039,066.27