Finding the Third Proportional to 626,147 and 1,340,839

Step by Step Solution

1. Step 1: Write the proportion equation
   626,147 : 1,340,839 = 1,340,839 : x
2. Step 2: Convert to fraction form
   626,147/1,340,839 = 1,340,839/x
3. Step 3: Cross multiply
   626,147x = 1,340,839 × 1,340,839
4. Step 4: Simplify right side
   626,147x = 1,797,849,223,921
5. Step 5: Solve for x
   x = 1,797,849,223,921/626,147
6. Step 6: Final answer
   x = 2,871,289.37