Finding the Third Proportional to 306,021 and 447,286.50

Step by Step Solution

1. Step 1: Write the proportion equation
   306,021 : 447,286.50 = 447,286.50 : x
2. Step 2: Convert to fraction form
   306,021/447,286.50 = 447,286.50/x
3. Step 3: Cross multiply
   306,021x = 447,286.50 × 447,286.50
4. Step 4: Simplify right side
   306,021x = 200,065,213,082.25
5. Step 5: Solve for x
   x = 200,065,213,082.25/306,021
6. Step 6: Final answer
   x = 653,763.02