Finding the Third Proportional to 199,554 and 301,405.50

Step by Step Solution

1. Step 1: Write the proportion equation
   199,554 : 301,405.50 = 301,405.50 : x
2. Step 2: Convert to fraction form
   199,554/301,405.50 = 301,405.50/x
3. Step 3: Cross multiply
   199,554x = 301,405.50 × 301,405.50
4. Step 4: Simplify right side
   199,554x = 90,845,275,430.25
5. Step 5: Solve for x
   x = 90,845,275,430.25/199,554
6. Step 6: Final answer
   x = 455,241.57