Finding the Third Proportional to 302,519.50 and 660,056

Step by Step Solution

1. Step 1: Write the proportion equation
   302,519.50 : 660,056 = 660,056 : x
2. Step 2: Convert to fraction form
   302,519.50/660,056 = 660,056/x
3. Step 3: Cross multiply
   302,519.50x = 660,056 × 660,056
4. Step 4: Simplify right side
   302,519.50x = 435,673,923,136
5. Step 5: Solve for x
   x = 435,673,923,136/302,519.50
6. Step 6: Final answer
   x = 1,440,151.54