Finding the Third Proportional to 302,509.50 and 660,036

Step by Step Solution

1. Step 1: Write the proportion equation
   302,509.50 : 660,036 = 660,036 : x
2. Step 2: Convert to fraction form
   302,509.50/660,036 = 660,036/x
3. Step 3: Cross multiply
   302,509.50x = 660,036 × 660,036
4. Step 4: Simplify right side
   302,509.50x = 435,647,521,296
5. Step 5: Solve for x
   x = 435,647,521,296/302,509.50
6. Step 6: Final answer
   x = 1,440,111.87