Finding the Third Proportional to 408,042 and 613,630.50

Step by Step Solution

1. Step 1: Write the proportion equation
   408,042 : 613,630.50 = 613,630.50 : x
2. Step 2: Convert to fraction form
   408,042/613,630.50 = 613,630.50/x
3. Step 3: Cross multiply
   408,042x = 613,630.50 × 613,630.50
4. Step 4: Simplify right side
   408,042x = 376,542,390,530.25
5. Step 5: Solve for x
   x = 376,542,390,530.25/408,042
6. Step 6: Final answer
   x = 922,803.02