Finding the Third Proportional to 218,810 and 470,884

Step by Step Solution

1. Step 1: Write the proportion equation
   218,810 : 470,884 = 470,884 : x
2. Step 2: Convert to fraction form
   218,810/470,884 = 470,884/x
3. Step 3: Cross multiply
   218,810x = 470,884 × 470,884
4. Step 4: Simplify right side
   218,810x = 221,731,741,456
5. Step 5: Solve for x
   x = 221,731,741,456/218,810
6. Step 6: Final answer
   x = 1,013,352.87