Finding the Third Proportional to 50,139 and 111,485

Step by Step Solution

1. Step 1: Write the proportion equation
   50,139 : 111,485 = 111,485 : x
2. Step 2: Convert to fraction form
   50,139/111,485 = 111,485/x
3. Step 3: Cross multiply
   50,139x = 111,485 × 111,485
4. Step 4: Simplify right side
   50,139x = 12,428,905,225
5. Step 5: Solve for x
   x = 12,428,905,225/50,139
6. Step 6: Final answer
   x = 247,888.97