Finding the Third Proportional to 113,618 and 238,656

Step by Step Solution

1. Step 1: Write the proportion equation
   113,618 : 238,656 = 238,656 : x
2. Step 2: Convert to fraction form
   113,618/238,656 = 238,656/x
3. Step 3: Cross multiply
   113,618x = 238,656 × 238,656
4. Step 4: Simplify right side
   113,618x = 56,956,686,336
5. Step 5: Solve for x
   x = 56,956,686,336/113,618
6. Step 6: Final answer
   x = 501,299.85