Finding the Third Proportional to 111,783 and 240,212

Step by Step Solution

1. Step 1: Write the proportion equation
   111,783 : 240,212 = 240,212 : x
2. Step 2: Convert to fraction form
   111,783/240,212 = 240,212/x
3. Step 3: Cross multiply
   111,783x = 240,212 × 240,212
4. Step 4: Simplify right side
   111,783x = 57,701,804,944
5. Step 5: Solve for x
   x = 57,701,804,944/111,783
6. Step 6: Final answer
   x = 516,194.81