Finding the Third Proportional to 196,256 and 423,616

Step by Step Solution

1. Step 1: Write the proportion equation
   196,256 : 423,616 = 423,616 : x
2. Step 2: Convert to fraction form
   196,256/423,616 = 423,616/x
3. Step 3: Cross multiply
   196,256x = 423,616 × 423,616
4. Step 4: Simplify right side
   196,256x = 179,450,515,456
5. Step 5: Solve for x
   x = 179,450,515,456/196,256
6. Step 6: Final answer
   x = 914,369.58