Finding the Third Proportional to 187,612 and 410,256

Step by Step Solution

1. Step 1: Write the proportion equation
   187,612 : 410,256 = 410,256 : x
2. Step 2: Convert to fraction form
   187,612/410,256 = 410,256/x
3. Step 3: Cross multiply
   187,612x = 410,256 × 410,256
4. Step 4: Simplify right side
   187,612x = 168,309,985,536
5. Step 5: Solve for x
   x = 168,309,985,536/187,612
6. Step 6: Final answer
   x = 897,117.38