Finding the Third Proportional to 145,321.50 and 221,748

Step by Step Solution

1. Step 1: Write the proportion equation
   145,321.50 : 221,748 = 221,748 : x
2. Step 2: Convert to fraction form
   145,321.50/221,748 = 221,748/x
3. Step 3: Cross multiply
   145,321.50x = 221,748 × 221,748
4. Step 4: Simplify right side
   145,321.50x = 49,172,175,504
5. Step 5: Solve for x
   x = 49,172,175,504/145,321.50
6. Step 6: Final answer
   x = 338,368.21