Finding the Third Proportional to 113,518.50 and 238,800

Step by Step Solution

1. Step 1: Write the proportion equation
   113,518.50 : 238,800 = 238,800 : x
2. Step 2: Convert to fraction form
   113,518.50/238,800 = 238,800/x
3. Step 3: Cross multiply
   113,518.50x = 238,800 × 238,800
4. Step 4: Simplify right side
   113,518.50x = 57,025,440,000
5. Step 5: Solve for x
   x = 57,025,440,000/113,518.50
6. Step 6: Final answer
   x = 502,344.90