Finding the Third Proportional to 128,846.25 and 200,376

Step by Step Solution

1. Step 1: Write the proportion equation
   128,846.25 : 200,376 = 200,376 : x
2. Step 2: Convert to fraction form
   128,846.25/200,376 = 200,376/x
3. Step 3: Cross multiply
   128,846.25x = 200,376 × 200,376
4. Step 4: Simplify right side
   128,846.25x = 40,150,541,376
5. Step 5: Solve for x
   x = 40,150,541,376/128,846.25
6. Step 6: Final answer
   x = 311,615.91