Finding the Third Proportional to 109,872 and 236,540.25

Step by Step Solution

1. Step 1: Write the proportion equation
   109,872 : 236,540.25 = 236,540.25 : x
2. Step 2: Convert to fraction form
   109,872/236,540.25 = 236,540.25/x
3. Step 3: Cross multiply
   109,872x = 236,540.25 × 236,540.25
4. Step 4: Simplify right side
   109,872x = 55,951,289,870.06
5. Step 5: Solve for x
   x = 55,951,289,870.06/109,872
6. Step 6: Final answer
   x = 509,240.66