Finding the Third Proportional to 111,574 and 245,189

Step by Step Solution

1. Step 1: Write the proportion equation
   111,574 : 245,189 = 245,189 : x
2. Step 2: Convert to fraction form
   111,574/245,189 = 245,189/x
3. Step 3: Cross multiply
   111,574x = 245,189 × 245,189
4. Step 4: Simplify right side
   111,574x = 60,117,645,721
5. Step 5: Solve for x
   x = 60,117,645,721/111,574
6. Step 6: Final answer
   x = 538,814.11