Finding the Third Proportional to 145,081.50 and 221,916

Step by Step Solution

1. Step 1: Write the proportion equation
   145,081.50 : 221,916 = 221,916 : x
2. Step 2: Convert to fraction form
   145,081.50/221,916 = 221,916/x
3. Step 3: Cross multiply
   145,081.50x = 221,916 × 221,916
4. Step 4: Simplify right side
   145,081.50x = 49,246,711,056
5. Step 5: Solve for x
   x = 49,246,711,056/145,081.50
6. Step 6: Final answer
   x = 339,441.70