Finding the Third Proportional to 8,947.69 and 20,215.38

Step by Step Solution

1. Step 1: Write the proportion equation
   8,947.69 : 20,215.38 = 20,215.38 : x
2. Step 2: Convert to fraction form
   8,947.69/20,215.38 = 20,215.38/x
3. Step 3: Cross multiply
   8,947.69x = 20,215.38 × 20,215.38
4. Step 4: Simplify right side
   8,947.69x = 408,661,386.39
5. Step 5: Solve for x
   x = 408,661,386.39/8,947.69
6. Step 6: Final answer
   x = 45,672.29