Finding the Third Proportional to 132,974.50 and 284,628.50

Step by Step Solution

1. Step 1: Write the proportion equation
   132,974.50 : 284,628.50 = 284,628.50 : x
2. Step 2: Convert to fraction form
   132,974.50/284,628.50 = 284,628.50/x
3. Step 3: Cross multiply
   132,974.50x = 284,628.50 × 284,628.50
4. Step 4: Simplify right side
   132,974.50x = 81,013,383,012.25
5. Step 5: Solve for x
   x = 81,013,383,012.25/132,974.50
6. Step 6: Final answer
   x = 609,239.99