Finding the Third Proportional to 111,919.50 and 171,891

Step by Step Solution

1. Step 1: Write the proportion equation
   111,919.50 : 171,891 = 171,891 : x
2. Step 2: Convert to fraction form
   111,919.50/171,891 = 171,891/x
3. Step 3: Cross multiply
   111,919.50x = 171,891 × 171,891
4. Step 4: Simplify right side
   111,919.50x = 29,546,515,881
5. Step 5: Solve for x
   x = 29,546,515,881/111,919.50
6. Step 6: Final answer
   x = 263,997.93