Finding the Third Proportional to 311,368 and 481,632

Step by Step Solution

1. Step 1: Write the proportion equation
   311,368 : 481,632 = 481,632 : x
2. Step 2: Convert to fraction form
   311,368/481,632 = 481,632/x
3. Step 3: Cross multiply
   311,368x = 481,632 × 481,632
4. Step 4: Simplify right side
   311,368x = 231,969,383,424
5. Step 5: Solve for x
   x = 231,969,383,424/311,368
6. Step 6: Final answer
   x = 745,000.72