Finding the Third Proportional to 140,036 and 212,644

Step by Step Solution

1. Step 1: Write the proportion equation
   140,036 : 212,644 = 212,644 : x
2. Step 2: Convert to fraction form
   140,036/212,644 = 212,644/x
3. Step 3: Cross multiply
   140,036x = 212,644 × 212,644
4. Step 4: Simplify right side
   140,036x = 45,217,470,736
5. Step 5: Solve for x
   x = 45,217,470,736/140,036
6. Step 6: Final answer
   x = 322,898.90