Finding the Third Proportional to 9,950 and 20,530

Step by Step Solution

1. Step 1: Write the proportion equation
   9,950 : 20,530 = 20,530 : x
2. Step 2: Convert to fraction form
   9,950/20,530 = 20,530/x
3. Step 3: Cross multiply
   9,950x = 20,530 × 20,530
4. Step 4: Simplify right side
   9,950x = 421,480,900
5. Step 5: Solve for x
   x = 421,480,900/9,950
6. Step 6: Final answer
   x = 42,359.89