Finding the Third Proportional to 317,182 and 485,819.50

Step by Step Solution

1. Step 1: Write the proportion equation
   317,182 : 485,819.50 = 485,819.50 : x
2. Step 2: Convert to fraction form
   317,182/485,819.50 = 485,819.50/x
3. Step 3: Cross multiply
   317,182x = 485,819.50 × 485,819.50
4. Step 4: Simplify right side
   317,182x = 236,020,586,580.25
5. Step 5: Solve for x
   x = 236,020,586,580.25/317,182
6. Step 6: Final answer
   x = 744,117.22