Finding the Third Proportional to 400,162 and 610,406

Step by Step Solution

1. Step 1: Write the proportion equation
   400,162 : 610,406 = 610,406 : x
2. Step 2: Convert to fraction form
   400,162/610,406 = 610,406/x
3. Step 3: Cross multiply
   400,162x = 610,406 × 610,406
4. Step 4: Simplify right side
   400,162x = 372,595,484,836
5. Step 5: Solve for x
   x = 372,595,484,836/400,162
6. Step 6: Final answer
   x = 931,111.61