Finding the Third Proportional to 442,384 and 667,200

Step by Step Solution

1. Step 1: Write the proportion equation
   442,384 : 667,200 = 667,200 : x
2. Step 2: Convert to fraction form
   442,384/667,200 = 667,200/x
3. Step 3: Cross multiply
   442,384x = 667,200 × 667,200
4. Step 4: Simplify right side
   442,384x = 445,155,840,000
5. Step 5: Solve for x
   x = 445,155,840,000/442,384
6. Step 6: Final answer
   x = 1,006,265.69