Finding the Third Proportional to 213,496 and 459,980

Step by Step Solution

1. Step 1: Write the proportion equation
   213,496 : 459,980 = 459,980 : x
2. Step 2: Convert to fraction form
   213,496/459,980 = 459,980/x
3. Step 3: Cross multiply
   213,496x = 459,980 × 459,980
4. Step 4: Simplify right side
   213,496x = 211,581,600,400
5. Step 5: Solve for x
   x = 211,581,600,400/213,496
6. Step 6: Final answer
   x = 991,033.09