Finding the Third Proportional to 111,574 and 245,188

Step by Step Solution

1. Step 1: Write the proportion equation
   111,574 : 245,188 = 245,188 : x
2. Step 2: Convert to fraction form
   111,574/245,188 = 245,188/x
3. Step 3: Cross multiply
   111,574x = 245,188 × 245,188
4. Step 4: Simplify right side
   111,574x = 60,117,155,344
5. Step 5: Solve for x
   x = 60,117,155,344/111,574
6. Step 6: Final answer
   x = 538,809.72