Finding the Third Proportional to 200,711.25 and 311,446.69

Step by Step Solution

1. Step 1: Write the proportion equation
   200,711.25 : 311,446.69 = 311,446.69 : x
2. Step 2: Convert to fraction form
   200,711.25/311,446.69 = 311,446.69/x
3. Step 3: Cross multiply
   200,711.25x = 311,446.69 × 311,446.69
4. Step 4: Simplify right side
   200,711.25x = 96,999,039,154.72
5. Step 5: Solve for x
   x = 96,999,039,154.72/200,711.25
6. Step 6: Final answer
   x = 483,276.54