Finding the Third Proportional to 8,330 and 17,890

Step by Step Solution

1. Step 1: Write the proportion equation
   8,330 : 17,890 = 17,890 : x
2. Step 2: Convert to fraction form
   8,330/17,890 = 17,890/x
3. Step 3: Cross multiply
   8,330x = 17,890 × 17,890
4. Step 4: Simplify right side
   8,330x = 320,052,100
5. Step 5: Solve for x
   x = 320,052,100/8,330
6. Step 6: Final answer
   x = 38,421.62