Finding the Third Proportional to 12,238 and 18,810

Step by Step Solution

1. Step 1: Write the proportion equation
   12,238 : 18,810 = 18,810 : x
2. Step 2: Convert to fraction form
   12,238/18,810 = 18,810/x
3. Step 3: Cross multiply
   12,238x = 18,810 × 18,810
4. Step 4: Simplify right side
   12,238x = 353,816,100
5. Step 5: Solve for x
   x = 353,816,100/12,238
6. Step 6: Final answer
   x = 28,911.27