Finding the Third Proportional to 231,638 and 367,086

Step by Step Solution

1. Step 1: Write the proportion equation
   231,638 : 367,086 = 367,086 : x
2. Step 2: Convert to fraction form
   231,638/367,086 = 367,086/x
3. Step 3: Cross multiply
   231,638x = 367,086 × 367,086
4. Step 4: Simplify right side
   231,638x = 134,752,131,396
5. Step 5: Solve for x
   x = 134,752,131,396/231,638
6. Step 6: Final answer
   x = 581,735.86