Finding the Third Proportional to 111,512 and 245,200

Step by Step Solution

1. Step 1: Write the proportion equation
   111,512 : 245,200 = 245,200 : x
2. Step 2: Convert to fraction form
   111,512/245,200 = 245,200/x
3. Step 3: Cross multiply
   111,512x = 245,200 × 245,200
4. Step 4: Simplify right side
   111,512x = 60,123,040,000
5. Step 5: Solve for x
   x = 60,123,040,000/111,512
6. Step 6: Final answer
   x = 539,162.06