Finding the Third Proportional to 20,007,983,115 and 42,603,694,608

Step by Step Solution

1. Step 1: Write the proportion equation
   20,007,983,115 : 42,603,694,608 = 42,603,694,608 : x
2. Step 2: Convert to fraction form
   20,007,983,115/42,603,694,608 = 42,603,694,608/x
3. Step 3: Cross multiply
   20,007,983,115x = 42,603,694,608 × 42,603,694,608
4. Step 4: Simplify right side
   20,007,983,115x = 1,815,074,794,251,728,191,488
5. Step 5: Solve for x
   x = 1,815,074,794,251,728,191,488/20,007,983,115
6. Step 6: Final answer
   x = 90,717,529,289.14