Finding the Third Proportional to 655,144 and 1,389,006

Step by Step Solution

1. Step 1: Write the proportion equation
   655,144 : 1,389,006 = 1,389,006 : x
2. Step 2: Convert to fraction form
   655,144/1,389,006 = 1,389,006/x
3. Step 3: Cross multiply
   655,144x = 1,389,006 × 1,389,006
4. Step 4: Simplify right side
   655,144x = 1,929,337,668,036
5. Step 5: Solve for x
   x = 1,929,337,668,036/655,144
6. Step 6: Final answer
   x = 2,944,906.26