Finding the Third Proportional to 200,811 and 301,225.50

Step by Step Solution

1. Step 1: Write the proportion equation
   200,811 : 301,225.50 = 301,225.50 : x
2. Step 2: Convert to fraction form
   200,811/301,225.50 = 301,225.50/x
3. Step 3: Cross multiply
   200,811x = 301,225.50 × 301,225.50
4. Step 4: Simplify right side
   200,811x = 90,736,801,850.25
5. Step 5: Solve for x
   x = 90,736,801,850.25/200,811
6. Step 6: Final answer
   x = 451,851.75