Finding the Third Proportional to 301,087.50 and 661,216.50

Step by Step Solution

1. Step 1: Write the proportion equation
   301,087.50 : 661,216.50 = 661,216.50 : x
2. Step 2: Convert to fraction form
   301,087.50/661,216.50 = 661,216.50/x
3. Step 3: Cross multiply
   301,087.50x = 661,216.50 × 661,216.50
4. Step 4: Simplify right side
   301,087.50x = 437,207,259,872.25
5. Step 5: Solve for x
   x = 437,207,259,872.25/301,087.50
6. Step 6: Final answer
   x = 1,452,093.69