Finding the Third Proportional to 216,796 and 333,648

Step by Step Solution

1. Step 1: Write the proportion equation
   216,796 : 333,648 = 333,648 : x
2. Step 2: Convert to fraction form
   216,796/333,648 = 333,648/x
3. Step 3: Cross multiply
   216,796x = 333,648 × 333,648
4. Step 4: Simplify right side
   216,796x = 111,320,987,904
5. Step 5: Solve for x
   x = 111,320,987,904/216,796
6. Step 6: Final answer
   x = 513,482.67