Finding the Third Proportional to 317,137.50 and 434,880

Step by Step Solution

1. Step 1: Write the proportion equation
   317,137.50 : 434,880 = 434,880 : x
2. Step 2: Convert to fraction form
   317,137.50/434,880 = 434,880/x
3. Step 3: Cross multiply
   317,137.50x = 434,880 × 434,880
4. Step 4: Simplify right side
   317,137.50x = 189,120,614,400
5. Step 5: Solve for x
   x = 189,120,614,400/317,137.50
6. Step 6: Final answer
   x = 596,336.33