Finding the Third Proportional to 18,721.13 and 41,041.69

Step by Step Solution

1. Step 1: Write the proportion equation
   18,721.13 : 41,041.69 = 41,041.69 : x
2. Step 2: Convert to fraction form
   18,721.13/41,041.69 = 41,041.69/x
3. Step 3: Cross multiply
   18,721.13x = 41,041.69 × 41,041.69
4. Step 4: Simplify right side
   18,721.13x = 1,684,420,112.85
5. Step 5: Solve for x
   x = 1,684,420,112.85/18,721.13
6. Step 6: Final answer
   x = 89,974.30