Finding the Third Proportional to 368,607 and 495,328.50

Step by Step Solution

1. Step 1: Write the proportion equation
   368,607 : 495,328.50 = 495,328.50 : x
2. Step 2: Convert to fraction form
   368,607/495,328.50 = 495,328.50/x
3. Step 3: Cross multiply
   368,607x = 495,328.50 × 495,328.50
4. Step 4: Simplify right side
   368,607x = 245,350,322,912.25
5. Step 5: Solve for x
   x = 245,350,322,912.25/368,607
6. Step 6: Final answer
   x = 665,614.93