Finding the Third Proportional to 415,923 and 661,144.50

Step by Step Solution

1. Step 1: Write the proportion equation
   415,923 : 661,144.50 = 661,144.50 : x
2. Step 2: Convert to fraction form
   415,923/661,144.50 = 661,144.50/x
3. Step 3: Cross multiply
   415,923x = 661,144.50 × 661,144.50
4. Step 4: Simplify right side
   415,923x = 437,112,049,880.25
5. Step 5: Solve for x
   x = 437,112,049,880.25/415,923
6. Step 6: Final answer
   x = 1,050,944.65