Finding the Third Proportional to 11,786.81 and 25,418.81

Step by Step Solution

1. Step 1: Write the proportion equation
   11,786.81 : 25,418.81 = 25,418.81 : x
2. Step 2: Convert to fraction form
   11,786.81/25,418.81 = 25,418.81/x
3. Step 3: Cross multiply
   11,786.81x = 25,418.81 × 25,418.81
4. Step 4: Simplify right side
   11,786.81x = 646,116,028.91
5. Step 5: Solve for x
   x = 646,116,028.91/11,786.81
6. Step 6: Final answer
   x = 54,816.86