Finding the Third Proportional to 20,443.50 and 41,643

Step by Step Solution

1. Step 1: Write the proportion equation
   20,443.50 : 41,643 = 41,643 : x
2. Step 2: Convert to fraction form
   20,443.50/41,643 = 41,643/x
3. Step 3: Cross multiply
   20,443.50x = 41,643 × 41,643
4. Step 4: Simplify right side
   20,443.50x = 1,734,139,449
5. Step 5: Solve for x
   x = 1,734,139,449/20,443.50
6. Step 6: Final answer
   x = 84,825.96