Finding the Third Proportional to 228,978 and 498,682

Step by Step Solution

1. Step 1: Write the proportion equation
   228,978 : 498,682 = 498,682 : x
2. Step 2: Convert to fraction form
   228,978/498,682 = 498,682/x
3. Step 3: Cross multiply
   228,978x = 498,682 × 498,682
4. Step 4: Simplify right side
   228,978x = 248,683,737,124
5. Step 5: Solve for x
   x = 248,683,737,124/228,978
6. Step 6: Final answer
   x = 1,086,059.52