Finding the Third Proportional to 442,132.50 and 667,401

Step by Step Solution

1. Step 1: Write the proportion equation
   442,132.50 : 667,401 = 667,401 : x
2. Step 2: Convert to fraction form
   442,132.50/667,401 = 667,401/x
3. Step 3: Cross multiply
   442,132.50x = 667,401 × 667,401
4. Step 4: Simplify right side
   442,132.50x = 445,424,094,801
5. Step 5: Solve for x
   x = 445,424,094,801/442,132.50
6. Step 6: Final answer
   x = 1,007,444.82