Finding the Third Proportional to 218,126 and 470,622

Step by Step Solution

1. Step 1: Write the proportion equation
   218,126 : 470,622 = 470,622 : x
2. Step 2: Convert to fraction form
   218,126/470,622 = 470,622/x
3. Step 3: Cross multiply
   218,126x = 470,622 × 470,622
4. Step 4: Simplify right side
   218,126x = 221,485,066,884
5. Step 5: Solve for x
   x = 221,485,066,884/218,126
6. Step 6: Final answer
   x = 1,015,399.66