Finding the Third Proportional to 199,590 and 301,456.50

Step by Step Solution

1. Step 1: Write the proportion equation
   199,590 : 301,456.50 = 301,456.50 : x
2. Step 2: Convert to fraction form
   199,590/301,456.50 = 301,456.50/x
3. Step 3: Cross multiply
   199,590x = 301,456.50 × 301,456.50
4. Step 4: Simplify right side
   199,590x = 90,876,021,392.25
5. Step 5: Solve for x
   x = 90,876,021,392.25/199,590
6. Step 6: Final answer
   x = 455,313.50