Finding the Third Proportional to 349,856 and 550,012

Step by Step Solution

1. Step 1: Write the proportion equation
   349,856 : 550,012 = 550,012 : x
2. Step 2: Convert to fraction form
   349,856/550,012 = 550,012/x
3. Step 3: Cross multiply
   349,856x = 550,012 × 550,012
4. Step 4: Simplify right side
   349,856x = 302,513,200,144
5. Step 5: Solve for x
   x = 302,513,200,144/349,856
6. Step 6: Final answer
   x = 864,679.18