Finding the Third Proportional to 191,819 and 300,900

Step by Step Solution

1. Step 1: Write the proportion equation
   191,819 : 300,900 = 300,900 : x
2. Step 2: Convert to fraction form
   191,819/300,900 = 300,900/x
3. Step 3: Cross multiply
   191,819x = 300,900 × 300,900
4. Step 4: Simplify right side
   191,819x = 90,540,810,000
5. Step 5: Solve for x
   x = 90,540,810,000/191,819
6. Step 6: Final answer
   x = 472,011.69