Finding the Third Proportional to 20,355.05 and 30,939.47

Step by Step Solution

1. Step 1: Write the proportion equation
   20,355.05 : 30,939.47 = 30,939.47 : x
2. Step 2: Convert to fraction form
   20,355.05/30,939.47 = 30,939.47/x
3. Step 3: Cross multiply
   20,355.05x = 30,939.47 × 30,939.47
4. Step 4: Simplify right side
   20,355.05x = 957,250,726.53
5. Step 5: Solve for x
   x = 957,250,726.53/20,355.05
6. Step 6: Final answer
   x = 47,027.68