Finding the Third Proportional to 311,048 and 470,892

Step by Step Solution

1. Step 1: Write the proportion equation
   311,048 : 470,892 = 470,892 : x
2. Step 2: Convert to fraction form
   311,048/470,892 = 470,892/x
3. Step 3: Cross multiply
   311,048x = 470,892 × 470,892
4. Step 4: Simplify right side
   311,048x = 221,739,275,664
5. Step 5: Solve for x
   x = 221,739,275,664/311,048
6. Step 6: Final answer
   x = 712,878.00