Finding the Third Proportional to 17,518 and 38,928

Step by Step Solution

1. Step 1: Write the proportion equation
   17,518 : 38,928 = 38,928 : x
2. Step 2: Convert to fraction form
   17,518/38,928 = 38,928/x
3. Step 3: Cross multiply
   17,518x = 38,928 × 38,928
4. Step 4: Simplify right side
   17,518x = 1,515,389,184
5. Step 5: Solve for x
   x = 1,515,389,184/17,518
6. Step 6: Final answer
   x = 86,504.69