Finding the Third Proportional to 685,383,078 and 1,044,144,636

Step by Step Solution

1. Step 1: Write the proportion equation
   685,383,078 : 1,044,144,636 = 1,044,144,636 : x
2. Step 2: Convert to fraction form
   685,383,078/1,044,144,636 = 1,044,144,636/x
3. Step 3: Cross multiply
   685,383,078x = 1,044,144,636 × 1,044,144,636
4. Step 4: Simplify right side
   685,383,078x = 1,090,238,020,887,572,480
5. Step 5: Solve for x
   x = 1,090,238,020,887,572,480/685,383,078
6. Step 6: Final answer
   x = 1,590,698,772.53