Finding the Third Proportional to 505,280 and 743,144

Step by Step Solution

1. Step 1: Write the proportion equation
   505,280 : 743,144 = 743,144 : x
2. Step 2: Convert to fraction form
   505,280/743,144 = 743,144/x
3. Step 3: Cross multiply
   505,280x = 743,144 × 743,144
4. Step 4: Simplify right side
   505,280x = 552,263,004,736
5. Step 5: Solve for x
   x = 552,263,004,736/505,280
6. Step 6: Final answer
   x = 1,092,984.10