Finding the Third Proportional to 8,418 and 17,860

Step by Step Solution

1. Step 1: Write the proportion equation
   8,418 : 17,860 = 17,860 : x
2. Step 2: Convert to fraction form
   8,418/17,860 = 17,860/x
3. Step 3: Cross multiply
   8,418x = 17,860 × 17,860
4. Step 4: Simplify right side
   8,418x = 318,979,600
5. Step 5: Solve for x
   x = 318,979,600/8,418
6. Step 6: Final answer
   x = 37,892.56