Finding the Third Proportional to 268,206 and 558,457.50

Step by Step Solution

1. Step 1: Write the proportion equation
   268,206 : 558,457.50 = 558,457.50 : x
2. Step 2: Convert to fraction form
   268,206/558,457.50 = 558,457.50/x
3. Step 3: Cross multiply
   268,206x = 558,457.50 × 558,457.50
4. Step 4: Simplify right side
   268,206x = 311,874,779,306.25
5. Step 5: Solve for x
   x = 311,874,779,306.25/268,206
6. Step 6: Final answer
   x = 1,162,818.06