Finding the Third Proportional to 339,039 and 498,190.50

Step by Step Solution

1. Step 1: Write the proportion equation
   339,039 : 498,190.50 = 498,190.50 : x
2. Step 2: Convert to fraction form
   339,039/498,190.50 = 498,190.50/x
3. Step 3: Cross multiply
   339,039x = 498,190.50 × 498,190.50
4. Step 4: Simplify right side
   339,039x = 248,193,774,290.25
5. Step 5: Solve for x
   x = 248,193,774,290.25/339,039
6. Step 6: Final answer
   x = 732,050.81