Finding the Third Proportional to 2,621,830,856 and 5,617,629,728

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621,830,856 : 5,617,629,728 = 5,617,629,728 : x
2. Step 2: Convert to fraction form
   2,621,830,856/5,617,629,728 = 5,617,629,728/x
3. Step 3: Cross multiply
   2,621,830,856x = 5,617,629,728 × 5,617,629,728
4. Step 4: Simplify right side
   2,621,830,856x = 31,557,763,760,909,352,960
5. Step 5: Solve for x
   x = 31,557,763,760,909,352,960/2,621,830,856
6. Step 6: Final answer
   x = 12,036,536,868.38