Finding the Third Proportional to 11,899,980 and 25,780,734

Step by Step Solution

1. Step 1: Write the proportion equation
   11,899,980 : 25,780,734 = 25,780,734 : x
2. Step 2: Convert to fraction form
   11,899,980/25,780,734 = 25,780,734/x
3. Step 3: Cross multiply
   11,899,980x = 25,780,734 × 25,780,734
4. Step 4: Simplify right side
   11,899,980x = 664,646,245,578,756
5. Step 5: Solve for x
   x = 664,646,245,578,756/11,899,980
6. Step 6: Final answer
   x = 55,852,719.55