Finding the Third Proportional to 339,036 and 498,042

Step by Step Solution

1. Step 1: Write the proportion equation
   339,036 : 498,042 = 498,042 : x
2. Step 2: Convert to fraction form
   339,036/498,042 = 498,042/x
3. Step 3: Cross multiply
   339,036x = 498,042 × 498,042
4. Step 4: Simplify right side
   339,036x = 248,045,833,764
5. Step 5: Solve for x
   x = 248,045,833,764/339,036
6. Step 6: Final answer
   x = 731,620.93