Finding the Third Proportional to 319,676 and 477,325.50

Step by Step Solution

1. Step 1: Write the proportion equation
   319,676 : 477,325.50 = 477,325.50 : x
2. Step 2: Convert to fraction form
   319,676/477,325.50 = 477,325.50/x
3. Step 3: Cross multiply
   319,676x = 477,325.50 × 477,325.50
4. Step 4: Simplify right side
   319,676x = 227,839,632,950.25
5. Step 5: Solve for x
   x = 227,839,632,950.25/319,676
6. Step 6: Final answer
   x = 712,720.48