Finding the Third Proportional to 111,812 and 171,612

Step by Step Solution

1. Step 1: Write the proportion equation
   111,812 : 171,612 = 171,612 : x
2. Step 2: Convert to fraction form
   111,812/171,612 = 171,612/x
3. Step 3: Cross multiply
   111,812x = 171,612 × 171,612
4. Step 4: Simplify right side
   111,812x = 29,450,678,544
5. Step 5: Solve for x
   x = 29,450,678,544/111,812
6. Step 6: Final answer
   x = 263,394.61