Finding the Third Proportional to 215,044 and 300,769

Step by Step Solution

1. Step 1: Write the proportion equation
   215,044 : 300,769 = 300,769 : x
2. Step 2: Convert to fraction form
   215,044/300,769 = 300,769/x
3. Step 3: Cross multiply
   215,044x = 300,769 × 300,769
4. Step 4: Simplify right side
   215,044x = 90,461,991,361
5. Step 5: Solve for x
   x = 90,461,991,361/215,044
6. Step 6: Final answer
   x = 420,667.36