Finding the Third Proportional to 217,732 and 342,150

Step by Step Solution

1. Step 1: Write the proportion equation
   217,732 : 342,150 = 342,150 : x
2. Step 2: Convert to fraction form
   217,732/342,150 = 342,150/x
3. Step 3: Cross multiply
   217,732x = 342,150 × 342,150
4. Step 4: Simplify right side
   217,732x = 117,066,622,500
5. Step 5: Solve for x
   x = 117,066,622,500/217,732
6. Step 6: Final answer
   x = 537,663.84