Finding the Third Proportional to 199,558 and 301,410.50

Step by Step Solution

1. Step 1: Write the proportion equation
   199,558 : 301,410.50 = 301,410.50 : x
2. Step 2: Convert to fraction form
   199,558/301,410.50 = 301,410.50/x
3. Step 3: Cross multiply
   199,558x = 301,410.50 × 301,410.50
4. Step 4: Simplify right side
   199,558x = 90,848,289,510.25
5. Step 5: Solve for x
   x = 90,848,289,510.25/199,558
6. Step 6: Final answer
   x = 455,247.54