Finding the Third Proportional to 2,540,498,978 and 5,503,150,326

Step by Step Solution

1. Step 1: Write the proportion equation
   2,540,498,978 : 5,503,150,326 = 5,503,150,326 : x
2. Step 2: Convert to fraction form
   2,540,498,978/5,503,150,326 = 5,503,150,326/x
3. Step 3: Cross multiply
   2,540,498,978x = 5,503,150,326 × 5,503,150,326
4. Step 4: Simplify right side
   2,540,498,978x = 30,284,663,510,553,907,200
5. Step 5: Solve for x
   x = 30,284,663,510,553,907,200/2,540,498,978
6. Step 6: Final answer
   x = 11,920,754,061.63