Finding the Third Proportional to 2,538,245,878.50 and 5,566,821,531

Step by Step Solution

1. Step 1: Write the proportion equation
   2,538,245,878.50 : 5,566,821,531 = 5,566,821,531 : x
2. Step 2: Convert to fraction form
   2,538,245,878.50/5,566,821,531 = 5,566,821,531/x
3. Step 3: Cross multiply
   2,538,245,878.50x = 5,566,821,531 × 5,566,821,531
4. Step 4: Simplify right side
   2,538,245,878.50x = 30,989,501,958,005,182,464
5. Step 5: Solve for x
   x = 30,989,501,958,005,182,464/2,538,245,878.50
6. Step 6: Final answer
   x = 12,209,022,861.22