Finding the Third Proportional to 111,981 and 245,806

Step by Step Solution

1. Step 1: Write the proportion equation
   111,981 : 245,806 = 245,806 : x
2. Step 2: Convert to fraction form
   111,981/245,806 = 245,806/x
3. Step 3: Cross multiply
   111,981x = 245,806 × 245,806
4. Step 4: Simplify right side
   111,981x = 60,420,589,636
5. Step 5: Solve for x
   x = 60,420,589,636/111,981
6. Step 6: Final answer
   x = 539,561.08