Finding the Third Proportional to 603,443 and 831,250

Step by Step Solution

1. Step 1: Write the proportion equation
   603,443 : 831,250 = 831,250 : x
2. Step 2: Convert to fraction form
   603,443/831,250 = 831,250/x
3. Step 3: Cross multiply
   603,443x = 831,250 × 831,250
4. Step 4: Simplify right side
   603,443x = 690,976,562,500
5. Step 5: Solve for x
   x = 690,976,562,500/603,443
6. Step 6: Final answer
   x = 1,145,056.89