Finding the Third Proportional to 105,656 and 220,012

Step by Step Solution

1. Step 1: Write the proportion equation
   105,656 : 220,012 = 220,012 : x
2. Step 2: Convert to fraction form
   105,656/220,012 = 220,012/x
3. Step 3: Cross multiply
   105,656x = 220,012 × 220,012
4. Step 4: Simplify right side
   105,656x = 48,405,280,144
5. Step 5: Solve for x
   x = 48,405,280,144/105,656
6. Step 6: Final answer
   x = 458,140.38