Finding the Third Proportional to 9,606 and 20,115

Step by Step Solution

1. Step 1: Write the proportion equation
   9,606 : 20,115 = 20,115 : x
2. Step 2: Convert to fraction form
   9,606/20,115 = 20,115/x
3. Step 3: Cross multiply
   9,606x = 20,115 × 20,115
4. Step 4: Simplify right side
   9,606x = 404,613,225
5. Step 5: Solve for x
   x = 404,613,225/9,606
6. Step 6: Final answer
   x = 42,120.89