Finding the Third Proportional to 311,470.50 and 445,404

Step by Step Solution

1. Step 1: Write the proportion equation
   311,470.50 : 445,404 = 445,404 : x
2. Step 2: Convert to fraction form
   311,470.50/445,404 = 445,404/x
3. Step 3: Cross multiply
   311,470.50x = 445,404 × 445,404
4. Step 4: Simplify right side
   311,470.50x = 198,384,723,216
5. Step 5: Solve for x
   x = 198,384,723,216/311,470.50
6. Step 6: Final answer
   x = 636,929.41