Finding the Third Proportional to 127,256.50 and 276,385

Step by Step Solution

1. Step 1: Write the proportion equation
   127,256.50 : 276,385 = 276,385 : x
2. Step 2: Convert to fraction form
   127,256.50/276,385 = 276,385/x
3. Step 3: Cross multiply
   127,256.50x = 276,385 × 276,385
4. Step 4: Simplify right side
   127,256.50x = 76,388,668,225
5. Step 5: Solve for x
   x = 76,388,668,225/127,256.50
6. Step 6: Final answer
   x = 600,273.21