Finding the Third Proportional to 196,464 and 428,904

Step by Step Solution

1. Step 1: Write the proportion equation
   196,464 : 428,904 = 428,904 : x
2. Step 2: Convert to fraction form
   196,464/428,904 = 428,904/x
3. Step 3: Cross multiply
   196,464x = 428,904 × 428,904
4. Step 4: Simplify right side
   196,464x = 183,958,641,216
5. Step 5: Solve for x
   x = 183,958,641,216/196,464
6. Step 6: Final answer
   x = 936,347.84