Finding the Third Proportional to 50,640 and 111,000

Step by Step Solution

1. Step 1: Write the proportion equation
   50,640 : 111,000 = 111,000 : x
2. Step 2: Convert to fraction form
   50,640/111,000 = 111,000/x
3. Step 3: Cross multiply
   50,640x = 111,000 × 111,000
4. Step 4: Simplify right side
   50,640x = 12,321,000,000
5. Step 5: Solve for x
   x = 12,321,000,000/50,640
6. Step 6: Final answer
   x = 243,305.69