Finding the Third Proportional to 111,240 and 238,308

Step by Step Solution

1. Step 1: Write the proportion equation
   111,240 : 238,308 = 238,308 : x
2. Step 2: Convert to fraction form
   111,240/238,308 = 238,308/x
3. Step 3: Cross multiply
   111,240x = 238,308 × 238,308
4. Step 4: Simplify right side
   111,240x = 56,790,702,864
5. Step 5: Solve for x
   x = 56,790,702,864/111,240
6. Step 6: Final answer
   x = 510,524.12