Finding the Third Proportional to 20,405 and 41,907

Step by Step Solution

1. Step 1: Write the proportion equation
   20,405 : 41,907 = 41,907 : x
2. Step 2: Convert to fraction form
   20,405/41,907 = 41,907/x
3. Step 3: Cross multiply
   20,405x = 41,907 × 41,907
4. Step 4: Simplify right side
   20,405x = 1,756,196,649
5. Step 5: Solve for x
   x = 1,756,196,649/20,405
6. Step 6: Final answer
   x = 86,066.98