Finding the Third Proportional to 216,579 and 333,326.25

Step by Step Solution

1. Step 1: Write the proportion equation
   216,579 : 333,326.25 = 333,326.25 : x
2. Step 2: Convert to fraction form
   216,579/333,326.25 = 333,326.25/x
3. Step 3: Cross multiply
   216,579x = 333,326.25 × 333,326.25
4. Step 4: Simplify right side
   216,579x = 111,106,388,939.06
5. Step 5: Solve for x
   x = 111,106,388,939.06/216,579
6. Step 6: Final answer
   x = 513,006.29