Finding the Third Proportional to 212,665.50 and 323,433

Step by Step Solution

1. Step 1: Write the proportion equation
   212,665.50 : 323,433 = 323,433 : x
2. Step 2: Convert to fraction form
   212,665.50/323,433 = 323,433/x
3. Step 3: Cross multiply
   212,665.50x = 323,433 × 323,433
4. Step 4: Simplify right side
   212,665.50x = 104,608,905,489
5. Step 5: Solve for x
   x = 104,608,905,489/212,665.50
6. Step 6: Final answer
   x = 491,894.10