Finding the Third Proportional to 685,382,707.50 and 1,044,144,139.50

Step by Step Solution

1. Step 1: Write the proportion equation
   685,382,707.50 : 1,044,144,139.50 = 1,044,144,139.50 : x
2. Step 2: Convert to fraction form
   685,382,707.50/1,044,144,139.50 = 1,044,144,139.50/x
3. Step 3: Cross multiply
   685,382,707.50x = 1,044,144,139.50 × 1,044,144,139.50
4. Step 4: Simplify right side
   685,382,707.50x = 1,090,236,984,052,195,456
5. Step 5: Solve for x
   x = 1,090,236,984,052,195,456/685,382,707.50
6. Step 6: Final answer
   x = 1,590,698,119.64