Finding the Third Proportional to 223,144 and 490,516

Step by Step Solution

1. Step 1: Write the proportion equation
   223,144 : 490,516 = 490,516 : x
2. Step 2: Convert to fraction form
   223,144/490,516 = 490,516/x
3. Step 3: Cross multiply
   223,144x = 490,516 × 490,516
4. Step 4: Simplify right side
   223,144x = 240,605,946,256
5. Step 5: Solve for x
   x = 240,605,946,256/223,144
6. Step 6: Final answer
   x = 1,078,254.16