Finding the Third Proportional to 209,716 and 333,576

Step by Step Solution

1. Step 1: Write the proportion equation
   209,716 : 333,576 = 333,576 : x
2. Step 2: Convert to fraction form
   209,716/333,576 = 333,576/x
3. Step 3: Cross multiply
   209,716x = 333,576 × 333,576
4. Step 4: Simplify right side
   209,716x = 111,272,947,776
5. Step 5: Solve for x
   x = 111,272,947,776/209,716
6. Step 6: Final answer
   x = 530,588.74