Finding the Third Proportional to 8,424 and 17,388

Step by Step Solution

1. Step 1: Write the proportion equation
   8,424 : 17,388 = 17,388 : x
2. Step 2: Convert to fraction form
   8,424/17,388 = 17,388/x
3. Step 3: Cross multiply
   8,424x = 17,388 × 17,388
4. Step 4: Simplify right side
   8,424x = 302,342,544
5. Step 5: Solve for x
   x = 302,342,544/8,424
6. Step 6: Final answer
   x = 35,890.62