Finding the Third Proportional to 18,680 and 30,936

Step by Step Solution

1. Step 1: Write the proportion equation
   18,680 : 30,936 = 30,936 : x
2. Step 2: Convert to fraction form
   18,680/30,936 = 30,936/x
3. Step 3: Cross multiply
   18,680x = 30,936 × 30,936
4. Step 4: Simplify right side
   18,680x = 957,036,096
5. Step 5: Solve for x
   x = 957,036,096/18,680
6. Step 6: Final answer
   x = 51,233.20