Finding the Third Proportional to 111,415.50 and 240,584.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,415.50 : 240,584.50 = 240,584.50 : x
2. Step 2: Convert to fraction form
   111,415.50/240,584.50 = 240,584.50/x
3. Step 3: Cross multiply
   111,415.50x = 240,584.50 × 240,584.50
4. Step 4: Simplify right side
   111,415.50x = 57,880,901,640.25
5. Step 5: Solve for x
   x = 57,880,901,640.25/111,415.50
6. Step 6: Final answer
   x = 519,504.93