Finding the Third Proportional to 20,338.50 and 41,931

Step by Step Solution

1. Step 1: Write the proportion equation
   20,338.50 : 41,931 = 41,931 : x
2. Step 2: Convert to fraction form
   20,338.50/41,931 = 41,931/x
3. Step 3: Cross multiply
   20,338.50x = 41,931 × 41,931
4. Step 4: Simplify right side
   20,338.50x = 1,758,208,761
5. Step 5: Solve for x
   x = 1,758,208,761/20,338.50
6. Step 6: Final answer
   x = 86,447.32