Finding the Third Proportional to 91,221 and 200,424

Step by Step Solution

1. Step 1: Write the proportion equation
   91,221 : 200,424 = 200,424 : x
2. Step 2: Convert to fraction form
   91,221/200,424 = 200,424/x
3. Step 3: Cross multiply
   91,221x = 200,424 × 200,424
4. Step 4: Simplify right side
   91,221x = 40,169,779,776
5. Step 5: Solve for x
   x = 40,169,779,776/91,221
6. Step 6: Final answer
   x = 440,356.71