Finding the Third Proportional to 320,430 and 483,099

Step by Step Solution

1. Step 1: Write the proportion equation
   320,430 : 483,099 = 483,099 : x
2. Step 2: Convert to fraction form
   320,430/483,099 = 483,099/x
3. Step 3: Cross multiply
   320,430x = 483,099 × 483,099
4. Step 4: Simplify right side
   320,430x = 233,384,643,801
5. Step 5: Solve for x
   x = 233,384,643,801/320,430
6. Step 6: Final answer
   x = 728,348.29