Finding the Third Proportional to 219,778 and 470,660

Step by Step Solution

1. Step 1: Write the proportion equation
   219,778 : 470,660 = 470,660 : x
2. Step 2: Convert to fraction form
   219,778/470,660 = 470,660/x
3. Step 3: Cross multiply
   219,778x = 470,660 × 470,660
4. Step 4: Simplify right side
   219,778x = 221,520,835,600
5. Step 5: Solve for x
   x = 221,520,835,600/219,778
6. Step 6: Final answer
   x = 1,007,929.98