Finding the Third Proportional to 111,709 and 240,913

Step by Step Solution

1. Step 1: Write the proportion equation
   111,709 : 240,913 = 240,913 : x
2. Step 2: Convert to fraction form
   111,709/240,913 = 240,913/x
3. Step 3: Cross multiply
   111,709x = 240,913 × 240,913
4. Step 4: Simplify right side
   111,709x = 58,039,073,569
5. Step 5: Solve for x
   x = 58,039,073,569/111,709
6. Step 6: Final answer
   x = 519,555.93