Finding the Third Proportional to 223,106 and 318,012

Step by Step Solution

1. Step 1: Write the proportion equation
   223,106 : 318,012 = 318,012 : x
2. Step 2: Convert to fraction form
   223,106/318,012 = 318,012/x
3. Step 3: Cross multiply
   223,106x = 318,012 × 318,012
4. Step 4: Simplify right side
   223,106x = 101,131,632,144
5. Step 5: Solve for x
   x = 101,131,632,144/223,106
6. Step 6: Final answer
   x = 453,289.61