Finding the Third Proportional to 1,222,328,655 and 2,647,721,388

Step by Step Solution

1. Step 1: Write the proportion equation
   1,222,328,655 : 2,647,721,388 = 2,647,721,388 : x
2. Step 2: Convert to fraction form
   1,222,328,655/2,647,721,388 = 2,647,721,388/x
3. Step 3: Cross multiply
   1,222,328,655x = 2,647,721,388 × 2,647,721,388
4. Step 4: Simplify right side
   1,222,328,655x = 7,010,428,548,472,646,656
5. Step 5: Solve for x
   x = 7,010,428,548,472,646,656/1,222,328,655
6. Step 6: Final answer
   x = 5,735,305,737.78