Finding the Third Proportional to 10,081.50 and 20,990

Step by Step Solution

1. Step 1: Write the proportion equation
   10,081.50 : 20,990 = 20,990 : x
2. Step 2: Convert to fraction form
   10,081.50/20,990 = 20,990/x
3. Step 3: Cross multiply
   10,081.50x = 20,990 × 20,990
4. Step 4: Simplify right side
   10,081.50x = 440,580,100
5. Step 5: Solve for x
   x = 440,580,100/10,081.50
6. Step 6: Final answer
   x = 43,701.84