Finding the Third Proportional to 301,691 and 447,318.50

Step by Step Solution

1. Step 1: Write the proportion equation
   301,691 : 447,318.50 = 447,318.50 : x
2. Step 2: Convert to fraction form
   301,691/447,318.50 = 447,318.50/x
3. Step 3: Cross multiply
   301,691x = 447,318.50 × 447,318.50
4. Step 4: Simplify right side
   301,691x = 200,093,840,442.25
5. Step 5: Solve for x
   x = 200,093,840,442.25/301,691
6. Step 6: Final answer
   x = 663,241.00