Finding the Third Proportional to 200,513 and 445,857.25

Step by Step Solution

1. Step 1: Write the proportion equation
   200,513 : 445,857.25 = 445,857.25 : x
2. Step 2: Convert to fraction form
   200,513/445,857.25 = 445,857.25/x
3. Step 3: Cross multiply
   200,513x = 445,857.25 × 445,857.25
4. Step 4: Simplify right side
   200,513x = 198,788,687,377.56
5. Step 5: Solve for x
   x = 198,788,687,377.56/200,513
6. Step 6: Final answer
   x = 991,400.49