Finding the Third Proportional to 196,467 and 428,910

Step by Step Solution

1. Step 1: Write the proportion equation
   196,467 : 428,910 = 428,910 : x
2. Step 2: Convert to fraction form
   196,467/428,910 = 428,910/x
3. Step 3: Cross multiply
   196,467x = 428,910 × 428,910
4. Step 4: Simplify right side
   196,467x = 183,963,788,100
5. Step 5: Solve for x
   x = 183,963,788,100/196,467
6. Step 6: Final answer
   x = 936,359.74