Finding the Third Proportional to 8,308 and 18,380

Step by Step Solution

1. Step 1: Write the proportion equation
   8,308 : 18,380 = 18,380 : x
2. Step 2: Convert to fraction form
   8,308/18,380 = 18,380/x
3. Step 3: Cross multiply
   8,308x = 18,380 × 18,380
4. Step 4: Simplify right side
   8,308x = 337,824,400
5. Step 5: Solve for x
   x = 337,824,400/8,308
6. Step 6: Final answer
   x = 40,662.54