Finding the Third Proportional to 89,721 and 146,529

Step by Step Solution

1. Step 1: Write the proportion equation
   89,721 : 146,529 = 146,529 : x
2. Step 2: Convert to fraction form
   89,721/146,529 = 146,529/x
3. Step 3: Cross multiply
   89,721x = 146,529 × 146,529
4. Step 4: Simplify right side
   89,721x = 21,470,747,841
5. Step 5: Solve for x
   x = 21,470,747,841/89,721
6. Step 6: Final answer
   x = 239,305.71