Finding the Third Proportional to 20,191.78 and 41,515.03

Step by Step Solution

1. Step 1: Write the proportion equation
   20,191.78 : 41,515.03 = 41,515.03 : x
2. Step 2: Convert to fraction form
   20,191.78/41,515.03 = 41,515.03/x
3. Step 3: Cross multiply
   20,191.78x = 41,515.03 × 41,515.03
4. Step 4: Simplify right side
   20,191.78x = 1,723,497,819.69
5. Step 5: Solve for x
   x = 1,723,497,819.69/20,191.78
6. Step 6: Final answer
   x = 85,356.40