Finding the Third Proportional to 200,857.50 and 303,345

Step by Step Solution

1. Step 1: Write the proportion equation
   200,857.50 : 303,345 = 303,345 : x
2. Step 2: Convert to fraction form
   200,857.50/303,345 = 303,345/x
3. Step 3: Cross multiply
   200,857.50x = 303,345 × 303,345
4. Step 4: Simplify right side
   200,857.50x = 92,018,189,025
5. Step 5: Solve for x
   x = 92,018,189,025/200,857.50
6. Step 6: Final answer
   x = 458,126.73