Finding the Third Proportional to 213,963.50 and 331,132

Step by Step Solution

1. Step 1: Write the proportion equation
   213,963.50 : 331,132 = 331,132 : x
2. Step 2: Convert to fraction form
   213,963.50/331,132 = 331,132/x
3. Step 3: Cross multiply
   213,963.50x = 331,132 × 331,132
4. Step 4: Simplify right side
   213,963.50x = 109,648,401,424
5. Step 5: Solve for x
   x = 109,648,401,424/213,963.50
6. Step 6: Final answer
   x = 512,463.11