Finding the Third Proportional to 216,573 and 333,317.25

Step by Step Solution

1. Step 1: Write the proportion equation
   216,573 : 333,317.25 = 333,317.25 : x
2. Step 2: Convert to fraction form
   216,573/333,317.25 = 333,317.25/x
3. Step 3: Cross multiply
   216,573x = 333,317.25 × 333,317.25
4. Step 4: Simplify right side
   216,573x = 111,100,389,147.56
5. Step 5: Solve for x
   x = 111,100,389,147.56/216,573
6. Step 6: Final answer
   x = 512,992.80