Finding the Third Proportional to 301,132.69 and 447,978.09

Step by Step Solution

1. Step 1: Write the proportion equation
   301,132.69 : 447,978.09 = 447,978.09 : x
2. Step 2: Convert to fraction form
   301,132.69/447,978.09 = 447,978.09/x
3. Step 3: Cross multiply
   301,132.69x = 447,978.09 × 447,978.09
4. Step 4: Simplify right side
   301,132.69x = 200,684,372,479.88
5. Step 5: Solve for x
   x = 200,684,372,479.88/301,132.69
6. Step 6: Final answer
   x = 666,431.71