Finding the Third Proportional to 217,500 and 479,142

Step by Step Solution

1. Step 1: Write the proportion equation
   217,500 : 479,142 = 479,142 : x
2. Step 2: Convert to fraction form
   217,500/479,142 = 479,142/x
3. Step 3: Cross multiply
   217,500x = 479,142 × 479,142
4. Step 4: Simplify right side
   217,500x = 229,577,056,164
5. Step 5: Solve for x
   x = 229,577,056,164/217,500
6. Step 6: Final answer
   x = 1,055,526.70