Finding the Third Proportional to 320,436 and 483,108

Step by Step Solution

1. Step 1: Write the proportion equation
   320,436 : 483,108 = 483,108 : x
2. Step 2: Convert to fraction form
   320,436/483,108 = 483,108/x
3. Step 3: Cross multiply
   320,436x = 483,108 × 483,108
4. Step 4: Simplify right side
   320,436x = 233,393,339,664
5. Step 5: Solve for x
   x = 233,393,339,664/320,436
6. Step 6: Final answer
   x = 728,361.79