Finding the Third Proportional to 196,515 and 426,078

Step by Step Solution

1. Step 1: Write the proportion equation
   196,515 : 426,078 = 426,078 : x
2. Step 2: Convert to fraction form
   196,515/426,078 = 426,078/x
3. Step 3: Cross multiply
   196,515x = 426,078 × 426,078
4. Step 4: Simplify right side
   196,515x = 181,542,462,084
5. Step 5: Solve for x
   x = 181,542,462,084/196,515
6. Step 6: Final answer
   x = 923,809.69