Finding the Third Proportional to 218,814 and 470,892

Step by Step Solution

1. Step 1: Write the proportion equation
   218,814 : 470,892 = 470,892 : x
2. Step 2: Convert to fraction form
   218,814/470,892 = 470,892/x
3. Step 3: Cross multiply
   218,814x = 470,892 × 470,892
4. Step 4: Simplify right side
   218,814x = 221,739,275,664
5. Step 5: Solve for x
   x = 221,739,275,664/218,814
6. Step 6: Final answer
   x = 1,013,368.78