Finding the Third Proportional to 10,423.69 and 21,711.38

Step by Step Solution

1. Step 1: Write the proportion equation
   10,423.69 : 21,711.38 = 21,711.38 : x
2. Step 2: Convert to fraction form
   10,423.69/21,711.38 = 21,711.38/x
3. Step 3: Cross multiply
   10,423.69x = 21,711.38 × 21,711.38
4. Step 4: Simplify right side
   10,423.69x = 471,383,804.39
5. Step 5: Solve for x
   x = 471,383,804.39/10,423.69
6. Step 6: Final answer
   x = 45,222.37