Finding the Third Proportional to 111,559 and 245,262

Step by Step Solution

1. Step 1: Write the proportion equation
   111,559 : 245,262 = 245,262 : x
2. Step 2: Convert to fraction form
   111,559/245,262 = 245,262/x
3. Step 3: Cross multiply
   111,559x = 245,262 × 245,262
4. Step 4: Simplify right side
   111,559x = 60,153,448,644
5. Step 5: Solve for x
   x = 60,153,448,644/111,559
6. Step 6: Final answer
   x = 539,207.49