Finding the Third Proportional to 400,462 and 711,892

Step by Step Solution

1. Step 1: Write the proportion equation
   400,462 : 711,892 = 711,892 : x
2. Step 2: Convert to fraction form
   400,462/711,892 = 711,892/x
3. Step 3: Cross multiply
   400,462x = 711,892 × 711,892
4. Step 4: Simplify right side
   400,462x = 506,790,219,664
5. Step 5: Solve for x
   x = 506,790,219,664/400,462
6. Step 6: Final answer
   x = 1,265,513.88