Finding the Third Proportional to 40,858 and 55,449

Step by Step Solution

1. Step 1: Write the proportion equation
   40,858 : 55,449 = 55,449 : x
2. Step 2: Convert to fraction form
   40,858/55,449 = 55,449/x
3. Step 3: Cross multiply
   40,858x = 55,449 × 55,449
4. Step 4: Simplify right side
   40,858x = 3,074,591,601
5. Step 5: Solve for x
   x = 3,074,591,601/40,858
6. Step 6: Final answer
   x = 75,250.66