Finding the Third Proportional to 218,808 and 470,880

Step by Step Solution

1. Step 1: Write the proportion equation
   218,808 : 470,880 = 470,880 : x
2. Step 2: Convert to fraction form
   218,808/470,880 = 470,880/x
3. Step 3: Cross multiply
   218,808x = 470,880 × 470,880
4. Step 4: Simplify right side
   218,808x = 221,727,974,400
5. Step 5: Solve for x
   x = 221,727,974,400/218,808
6. Step 6: Final answer
   x = 1,013,344.92