Finding the Third Proportional to 470,880 and 720,144

Step by Step Solution

1. Step 1: Write the proportion equation
   470,880 : 720,144 = 720,144 : x
2. Step 2: Convert to fraction form
   470,880/720,144 = 720,144/x
3. Step 3: Cross multiply
   470,880x = 720,144 × 720,144
4. Step 4: Simplify right side
   470,880x = 518,607,380,736
5. Step 5: Solve for x
   x = 518,607,380,736/470,880
6. Step 6: Final answer
   x = 1,101,357.84