Finding the Third Proportional to 321,933 and 512,452.50

Step by Step Solution

1. Step 1: Write the proportion equation
   321,933 : 512,452.50 = 512,452.50 : x
2. Step 2: Convert to fraction form
   321,933/512,452.50 = 512,452.50/x
3. Step 3: Cross multiply
   321,933x = 512,452.50 × 512,452.50
4. Step 4: Simplify right side
   321,933x = 262,607,564,756.25
5. Step 5: Solve for x
   x = 262,607,564,756.25/321,933
6. Step 6: Final answer
   x = 815,721.17