Finding the Third Proportional to 218,840 and 471,160

Step by Step Solution

1. Step 1: Write the proportion equation
   218,840 : 471,160 = 471,160 : x
2. Step 2: Convert to fraction form
   218,840/471,160 = 471,160/x
3. Step 3: Cross multiply
   218,840x = 471,160 × 471,160
4. Step 4: Simplify right side
   218,840x = 221,991,745,600
5. Step 5: Solve for x
   x = 221,991,745,600/218,840
6. Step 6: Final answer
   x = 1,014,402.05