Finding the Third Proportional to 11,856,642 and 25,510,836

Step by Step Solution

1. Step 1: Write the proportion equation
   11,856,642 : 25,510,836 = 25,510,836 : x
2. Step 2: Convert to fraction form
   11,856,642/25,510,836 = 25,510,836/x
3. Step 3: Cross multiply
   11,856,642x = 25,510,836 × 25,510,836
4. Step 4: Simplify right side
   11,856,642x = 650,802,753,418,896
5. Step 5: Solve for x
   x = 650,802,753,418,896/11,856,642
6. Step 6: Final answer
   x = 54,889,297.78