Finding the Third Proportional to 407,836.50 and 889,401

Step by Step Solution

1. Step 1: Write the proportion equation
   407,836.50 : 889,401 = 889,401 : x
2. Step 2: Convert to fraction form
   407,836.50/889,401 = 889,401/x
3. Step 3: Cross multiply
   407,836.50x = 889,401 × 889,401
4. Step 4: Simplify right side
   407,836.50x = 791,034,138,801
5. Step 5: Solve for x
   x = 791,034,138,801/407,836.50
6. Step 6: Final answer
   x = 1,939,586.42