Finding the Third Proportional to 20,648.25 and 30,921.75

Step by Step Solution

1. Step 1: Write the proportion equation
   20,648.25 : 30,921.75 = 30,921.75 : x
2. Step 2: Convert to fraction form
   20,648.25/30,921.75 = 30,921.75/x
3. Step 3: Cross multiply
   20,648.25x = 30,921.75 × 30,921.75
4. Step 4: Simplify right side
   20,648.25x = 956,154,623.06
5. Step 5: Solve for x
   x = 956,154,623.06/20,648.25
6. Step 6: Final answer
   x = 46,306.81