Finding the Third Proportional to 9,942 and 20,524

Step by Step Solution

1. Step 1: Write the proportion equation
   9,942 : 20,524 = 20,524 : x
2. Step 2: Convert to fraction form
   9,942/20,524 = 20,524/x
3. Step 3: Cross multiply
   9,942x = 20,524 × 20,524
4. Step 4: Simplify right side
   9,942x = 421,234,576
5. Step 5: Solve for x
   x = 421,234,576/9,942
6. Step 6: Final answer
   x = 42,369.20