Finding the Third Proportional to 8,112 and 18,636

Step by Step Solution

1. Step 1: Write the proportion equation
   8,112 : 18,636 = 18,636 : x
2. Step 2: Convert to fraction form
   8,112/18,636 = 18,636/x
3. Step 3: Cross multiply
   8,112x = 18,636 × 18,636
4. Step 4: Simplify right side
   8,112x = 347,300,496
5. Step 5: Solve for x
   x = 347,300,496/8,112
6. Step 6: Final answer
   x = 42,813.18