Finding the Third Proportional to 111,544 and 245,120

Step by Step Solution

1. Step 1: Write the proportion equation
   111,544 : 245,120 = 245,120 : x
2. Step 2: Convert to fraction form
   111,544/245,120 = 245,120/x
3. Step 3: Cross multiply
   111,544x = 245,120 × 245,120
4. Step 4: Simplify right side
   111,544x = 60,083,814,400
5. Step 5: Solve for x
   x = 60,083,814,400/111,544
6. Step 6: Final answer
   x = 538,655.73