Finding the Third Proportional to 360,456 and 743,760

Step by Step Solution

1. Step 1: Write the proportion equation
   360,456 : 743,760 = 743,760 : x
2. Step 2: Convert to fraction form
   360,456/743,760 = 743,760/x
3. Step 3: Cross multiply
   360,456x = 743,760 × 743,760
4. Step 4: Simplify right side
   360,456x = 553,178,937,600
5. Step 5: Solve for x
   x = 553,178,937,600/360,456
6. Step 6: Final answer
   x = 1,534,664.25