Finding the Third Proportional to 9,636 and 21,018

Step by Step Solution

1. Step 1: Write the proportion equation
   9,636 : 21,018 = 21,018 : x
2. Step 2: Convert to fraction form
   9,636/21,018 = 21,018/x
3. Step 3: Cross multiply
   9,636x = 21,018 × 21,018
4. Step 4: Simplify right side
   9,636x = 441,756,324
5. Step 5: Solve for x
   x = 441,756,324/9,636
6. Step 6: Final answer
   x = 45,844.37