Finding the Third Proportional to 5,578,797,548 and 12,138,213,638

Step by Step Solution

1. Step 1: Write the proportion equation
   5,578,797,548 : 12,138,213,638 = 12,138,213,638 : x
2. Step 2: Convert to fraction form
   5,578,797,548/12,138,213,638 = 12,138,213,638/x
3. Step 3: Cross multiply
   5,578,797,548x = 12,138,213,638 × 12,138,213,638
4. Step 4: Simplify right side
   5,578,797,548x = 147,336,230,321,729,191,936
5. Step 5: Solve for x
   x = 147,336,230,321,729,191,936/5,578,797,548
6. Step 6: Final answer
   x = 26,410,033,533.94