Finding the Third Proportional to 2,521,568,664.13 and 5,518,145,591.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,521,568,664.13 : 5,518,145,591.25 = 5,518,145,591.25 : x
2. Step 2: Convert to fraction form
   2,521,568,664.13/5,518,145,591.25 = 5,518,145,591.25/x
3. Step 3: Cross multiply
   2,521,568,664.13x = 5,518,145,591.25 × 5,518,145,591.25
4. Step 4: Simplify right side
   2,521,568,664.13x = 30,449,930,766,231,810,048
5. Step 5: Solve for x
   x = 30,449,930,766,231,810,048/2,521,568,664.13
6. Step 6: Final answer
   x = 12,075,788,852.97