Finding the Third Proportional to 200,709 and 275,216.91

Step by Step Solution

1. Step 1: Write the proportion equation
   200,709 : 275,216.91 = 275,216.91 : x
2. Step 2: Convert to fraction form
   200,709/275,216.91 = 275,216.91/x
3. Step 3: Cross multiply
   200,709x = 275,216.91 × 275,216.91
4. Step 4: Simplify right side
   200,709x = 75,744,345,485.82
5. Step 5: Solve for x
   x = 75,744,345,485.82/200,709
6. Step 6: Final answer
   x = 377,383.90