Finding the Third Proportional to 399,600 and 856,062

Step by Step Solution

1. Step 1: Write the proportion equation
   399,600 : 856,062 = 856,062 : x
2. Step 2: Convert to fraction form
   399,600/856,062 = 856,062/x
3. Step 3: Cross multiply
   399,600x = 856,062 × 856,062
4. Step 4: Simplify right side
   399,600x = 732,842,147,844
5. Step 5: Solve for x
   x = 732,842,147,844/399,600
6. Step 6: Final answer
   x = 1,833,939.31