Finding the Third Proportional to 215,869 and 301,951

Step by Step Solution

1. Step 1: Write the proportion equation
   215,869 : 301,951 = 301,951 : x
2. Step 2: Convert to fraction form
   215,869/301,951 = 301,951/x
3. Step 3: Cross multiply
   215,869x = 301,951 × 301,951
4. Step 4: Simplify right side
   215,869x = 91,174,406,401
5. Step 5: Solve for x
   x = 91,174,406,401/215,869
6. Step 6: Final answer
   x = 422,359.89