Finding the Third Proportional to 425,422.50 and 667,456

Step by Step Solution

1. Step 1: Write the proportion equation
   425,422.50 : 667,456 = 667,456 : x
2. Step 2: Convert to fraction form
   425,422.50/667,456 = 667,456/x
3. Step 3: Cross multiply
   425,422.50x = 667,456 × 667,456
4. Step 4: Simplify right side
   425,422.50x = 445,497,511,936
5. Step 5: Solve for x
   x = 445,497,511,936/425,422.50
6. Step 6: Final answer
   x = 1,047,188.41