Finding the Third Proportional to 215,045 and 300,771

Step by Step Solution

1. Step 1: Write the proportion equation
   215,045 : 300,771 = 300,771 : x
2. Step 2: Convert to fraction form
   215,045/300,771 = 300,771/x
3. Step 3: Cross multiply
   215,045x = 300,771 × 300,771
4. Step 4: Simplify right side
   215,045x = 90,463,194,441
5. Step 5: Solve for x
   x = 90,463,194,441/215,045
6. Step 6: Final answer
   x = 420,671.00