Finding the Third Proportional to 317,901.50 and 445,604

Step by Step Solution

1. Step 1: Write the proportion equation
   317,901.50 : 445,604 = 445,604 : x
2. Step 2: Convert to fraction form
   317,901.50/445,604 = 445,604/x
3. Step 3: Cross multiply
   317,901.50x = 445,604 × 445,604
4. Step 4: Simplify right side
   317,901.50x = 198,562,924,816
5. Step 5: Solve for x
   x = 198,562,924,816/317,901.50
6. Step 6: Final answer
   x = 624,605.18