Finding the Third Proportional to 12,636 and 18,666

Step by Step Solution

1. Step 1: Write the proportion equation
   12,636 : 18,666 = 18,666 : x
2. Step 2: Convert to fraction form
   12,636/18,666 = 18,666/x
3. Step 3: Cross multiply
   12,636x = 18,666 × 18,666
4. Step 4: Simplify right side
   12,636x = 348,419,556
5. Step 5: Solve for x
   x = 348,419,556/12,636
6. Step 6: Final answer
   x = 27,573.56