Finding the Third Proportional to 9,942 and 20,514

Step by Step Solution

1. Step 1: Write the proportion equation
   9,942 : 20,514 = 20,514 : x
2. Step 2: Convert to fraction form
   9,942/20,514 = 20,514/x
3. Step 3: Cross multiply
   9,942x = 20,514 × 20,514
4. Step 4: Simplify right side
   9,942x = 420,824,196
5. Step 5: Solve for x
   x = 420,824,196/9,942
6. Step 6: Final answer
   x = 42,327.92