Finding the Third Proportional to 550,404 and 831,150

Step by Step Solution

1. Step 1: Write the proportion equation
   550,404 : 831,150 = 831,150 : x
2. Step 2: Convert to fraction form
   550,404/831,150 = 831,150/x
3. Step 3: Cross multiply
   550,404x = 831,150 × 831,150
4. Step 4: Simplify right side
   550,404x = 690,810,322,500
5. Step 5: Solve for x
   x = 690,810,322,500/550,404
6. Step 6: Final answer
   x = 1,255,096.84