Finding the Third Proportional to 302,575.50 and 411,144

Step by Step Solution

1. Step 1: Write the proportion equation
   302,575.50 : 411,144 = 411,144 : x
2. Step 2: Convert to fraction form
   302,575.50/411,144 = 411,144/x
3. Step 3: Cross multiply
   302,575.50x = 411,144 × 411,144
4. Step 4: Simplify right side
   302,575.50x = 169,039,388,736
5. Step 5: Solve for x
   x = 169,039,388,736/302,575.50
6. Step 6: Final answer
   x = 558,668.46