Finding the Third Proportional to 199,548 and 408,418.50

Step by Step Solution

1. Step 1: Write the proportion equation
   199,548 : 408,418.50 = 408,418.50 : x
2. Step 2: Convert to fraction form
   199,548/408,418.50 = 408,418.50/x
3. Step 3: Cross multiply
   199,548x = 408,418.50 × 408,418.50
4. Step 4: Simplify right side
   199,548x = 166,805,671,142.25
5. Step 5: Solve for x
   x = 166,805,671,142.25/199,548
6. Step 6: Final answer
   x = 835,917.53