Finding the Third Proportional to 400.31 and 849.56

Step by Step Solution

1. Step 1: Write the proportion equation
   400.31 : 849.56 = 849.56 : x
2. Step 2: Convert to fraction form
   400.31/849.56 = 849.56/x
3. Step 3: Cross multiply
   400.31x = 849.56 × 849.56
4. Step 4: Simplify right side
   400.31x = 721,756.44
5. Step 5: Solve for x
   x = 721,756.44/400.31
6. Step 6: Final answer
   x = 1,802.98