Finding the Third Proportional to 196,442 and 428,868

Step by Step Solution

1. Step 1: Write the proportion equation
   196,442 : 428,868 = 428,868 : x
2. Step 2: Convert to fraction form
   196,442/428,868 = 428,868/x
3. Step 3: Cross multiply
   196,442x = 428,868 × 428,868
4. Step 4: Simplify right side
   196,442x = 183,927,761,424
5. Step 5: Solve for x
   x = 183,927,761,424/196,442
6. Step 6: Final answer
   x = 936,295.50