Finding the Third Proportional to 109,369.50 and 171,345

Step by Step Solution

1. Step 1: Write the proportion equation
   109,369.50 : 171,345 = 171,345 : x
2. Step 2: Convert to fraction form
   109,369.50/171,345 = 171,345/x
3. Step 3: Cross multiply
   109,369.50x = 171,345 × 171,345
4. Step 4: Simplify right side
   109,369.50x = 29,359,109,025
5. Step 5: Solve for x
   x = 29,359,109,025/109,369.50
6. Step 6: Final answer
   x = 268,439.64