Finding the Third Proportional to 191,821 and 300,903

Step by Step Solution

1. Step 1: Write the proportion equation
   191,821 : 300,903 = 300,903 : x
2. Step 2: Convert to fraction form
   191,821/300,903 = 300,903/x
3. Step 3: Cross multiply
   191,821x = 300,903 × 300,903
4. Step 4: Simplify right side
   191,821x = 90,542,615,409
5. Step 5: Solve for x
   x = 90,542,615,409/191,821
6. Step 6: Final answer
   x = 472,016.18