Finding the Third Proportional to 401,062 and 856,260

Step by Step Solution

1. Step 1: Write the proportion equation
   401,062 : 856,260 = 856,260 : x
2. Step 2: Convert to fraction form
   401,062/856,260 = 856,260/x
3. Step 3: Cross multiply
   401,062x = 856,260 × 856,260
4. Step 4: Simplify right side
   401,062x = 733,181,187,600
5. Step 5: Solve for x
   x = 733,181,187,600/401,062
6. Step 6: Final answer
   x = 1,828,099.37