Finding the Third Proportional to 222,039 and 329,629.50

Step by Step Solution

1. Step 1: Write the proportion equation
   222,039 : 329,629.50 = 329,629.50 : x
2. Step 2: Convert to fraction form
   222,039/329,629.50 = 329,629.50/x
3. Step 3: Cross multiply
   222,039x = 329,629.50 × 329,629.50
4. Step 4: Simplify right side
   222,039x = 108,655,607,270.25
5. Step 5: Solve for x
   x = 108,655,607,270.25/222,039
6. Step 6: Final answer
   x = 489,353.70