Finding the Third Proportional to 197,070 and 408,150

Step by Step Solution

1. Step 1: Write the proportion equation
   197,070 : 408,150 = 408,150 : x
2. Step 2: Convert to fraction form
   197,070/408,150 = 408,150/x
3. Step 3: Cross multiply
   197,070x = 408,150 × 408,150
4. Step 4: Simplify right side
   197,070x = 166,586,422,500
5. Step 5: Solve for x
   x = 166,586,422,500/197,070
6. Step 6: Final answer
   x = 845,315.99