Finding the Third Proportional to 604,401 and 821,325.50

Step by Step Solution

1. Step 1: Write the proportion equation
   604,401 : 821,325.50 = 821,325.50 : x
2. Step 2: Convert to fraction form
   604,401/821,325.50 = 821,325.50/x
3. Step 3: Cross multiply
   604,401x = 821,325.50 × 821,325.50
4. Step 4: Simplify right side
   604,401x = 674,575,576,950.25
5. Step 5: Solve for x
   x = 674,575,576,950.25/604,401
6. Step 6: Final answer
   x = 1,116,105.99