Finding the Third Proportional to 11,916 and 18,386

Step by Step Solution

1. Step 1: Write the proportion equation
   11,916 : 18,386 = 18,386 : x
2. Step 2: Convert to fraction form
   11,916/18,386 = 18,386/x
3. Step 3: Cross multiply
   11,916x = 18,386 × 18,386
4. Step 4: Simplify right side
   11,916x = 338,044,996
5. Step 5: Solve for x
   x = 338,044,996/11,916
6. Step 6: Final answer
   x = 28,369.00