Finding the Third Proportional to 218,812 and 470,888

Step by Step Solution

1. Step 1: Write the proportion equation
   218,812 : 470,888 = 470,888 : x
2. Step 2: Convert to fraction form
   218,812/470,888 = 470,888/x
3. Step 3: Cross multiply
   218,812x = 470,888 × 470,888
4. Step 4: Simplify right side
   218,812x = 221,735,508,544
5. Step 5: Solve for x
   x = 221,735,508,544/218,812
6. Step 6: Final answer
   x = 1,013,360.82