Finding the Third Proportional to 240,644 and 383,238

Step by Step Solution

1. Step 1: Write the proportion equation
   240,644 : 383,238 = 383,238 : x
2. Step 2: Convert to fraction form
   240,644/383,238 = 383,238/x
3. Step 3: Cross multiply
   240,644x = 383,238 × 383,238
4. Step 4: Simplify right side
   240,644x = 146,871,364,644
5. Step 5: Solve for x
   x = 146,871,364,644/240,644
6. Step 6: Final answer
   x = 610,326.31