Finding the Third Proportional to 223,134 and 490,494

Step by Step Solution

1. Step 1: Write the proportion equation
   223,134 : 490,494 = 490,494 : x
2. Step 2: Convert to fraction form
   223,134/490,494 = 490,494/x
3. Step 3: Cross multiply
   223,134x = 490,494 × 490,494
4. Step 4: Simplify right side
   223,134x = 240,584,364,036
5. Step 5: Solve for x
   x = 240,584,364,036/223,134
6. Step 6: Final answer
   x = 1,078,205.76