Finding the Third Proportional to 311,981.50 and 446,150

Step by Step Solution

1. Step 1: Write the proportion equation
   311,981.50 : 446,150 = 446,150 : x
2. Step 2: Convert to fraction form
   311,981.50/446,150 = 446,150/x
3. Step 3: Cross multiply
   311,981.50x = 446,150 × 446,150
4. Step 4: Simplify right side
   311,981.50x = 199,049,822,500
5. Step 5: Solve for x
   x = 199,049,822,500/311,981.50
6. Step 6: Final answer
   x = 638,018.03