Finding the Third Proportional to 302,647.50 and 664,071

Step by Step Solution

1. Step 1: Write the proportion equation
   302,647.50 : 664,071 = 664,071 : x
2. Step 2: Convert to fraction form
   302,647.50/664,071 = 664,071/x
3. Step 3: Cross multiply
   302,647.50x = 664,071 × 664,071
4. Step 4: Simplify right side
   302,647.50x = 440,990,293,041
5. Step 5: Solve for x
   x = 440,990,293,041/302,647.50
6. Step 6: Final answer
   x = 1,457,108.66