Finding the Third Proportional to 243,486 and 493,668

Step by Step Solution

1. Step 1: Write the proportion equation
   243,486 : 493,668 = 493,668 : x
2. Step 2: Convert to fraction form
   243,486/493,668 = 493,668/x
3. Step 3: Cross multiply
   243,486x = 493,668 × 493,668
4. Step 4: Simplify right side
   243,486x = 243,708,094,224
5. Step 5: Solve for x
   x = 243,708,094,224/243,486
6. Step 6: Final answer
   x = 1,000,912.14