Finding the Third Proportional to 427,405.50 and 664,422

Step by Step Solution

1. Step 1: Write the proportion equation
   427,405.50 : 664,422 = 664,422 : x
2. Step 2: Convert to fraction form
   427,405.50/664,422 = 664,422/x
3. Step 3: Cross multiply
   427,405.50x = 664,422 × 664,422
4. Step 4: Simplify right side
   427,405.50x = 441,456,594,084
5. Step 5: Solve for x
   x = 441,456,594,084/427,405.50
6. Step 6: Final answer
   x = 1,032,875.32