Finding the Third Proportional to 20,456.50 and 41,408

Step by Step Solution

1. Step 1: Write the proportion equation
   20,456.50 : 41,408 = 41,408 : x
2. Step 2: Convert to fraction form
   20,456.50/41,408 = 41,408/x
3. Step 3: Cross multiply
   20,456.50x = 41,408 × 41,408
4. Step 4: Simplify right side
   20,456.50x = 1,714,622,464
5. Step 5: Solve for x
   x = 1,714,622,464/20,456.50
6. Step 6: Final answer
   x = 83,817.98