Finding the Third Proportional to 317,475 and 479,452.50

Step by Step Solution

1. Step 1: Write the proportion equation
   317,475 : 479,452.50 = 479,452.50 : x
2. Step 2: Convert to fraction form
   317,475/479,452.50 = 479,452.50/x
3. Step 3: Cross multiply
   317,475x = 479,452.50 × 479,452.50
4. Step 4: Simplify right side
   317,475x = 229,874,699,756.25
5. Step 5: Solve for x
   x = 229,874,699,756.25/317,475
6. Step 6: Final answer
   x = 724,071.82