Finding the Third Proportional to 400,158.75 and 610,401

Step by Step Solution

1. Step 1: Write the proportion equation
   400,158.75 : 610,401 = 610,401 : x
2. Step 2: Convert to fraction form
   400,158.75/610,401 = 610,401/x
3. Step 3: Cross multiply
   400,158.75x = 610,401 × 610,401
4. Step 4: Simplify right side
   400,158.75x = 372,589,380,801
5. Step 5: Solve for x
   x = 372,589,380,801/400,158.75
6. Step 6: Final answer
   x = 931,103.92