Finding the Third Proportional to 12,636 and 18,036

Step by Step Solution

1. Step 1: Write the proportion equation
   12,636 : 18,036 = 18,036 : x
2. Step 2: Convert to fraction form
   12,636/18,036 = 18,036/x
3. Step 3: Cross multiply
   12,636x = 18,036 × 18,036
4. Step 4: Simplify right side
   12,636x = 325,297,296
5. Step 5: Solve for x
   x = 325,297,296/12,636
6. Step 6: Final answer
   x = 25,743.69