Finding the Third Proportional to 396,649,839,604.50 and 849,886,987,688.25

Step by Step Solution

1. Step 1: Write the proportion equation
   396,649,839,604.50 : 849,886,987,688.25 = 849,886,987,688.25 : x
2. Step 2: Convert to fraction form
   396,649,839,604.50/849,886,987,688.25 = 849,886,987,688.25/x
3. Step 3: Cross multiply
   396,649,839,604.50x = 849,886,987,688.25 × 849,886,987,688.25
4. Step 4: Simplify right side
   396,649,839,604.50x = 722,307,891,841,807,633,350,656
5. Step 5: Solve for x
   x = 722,307,891,841,807,633,350,656/396,649,839,604.50
6. Step 6: Final answer
   x = 1,821,021,515,001.80