Finding the Third Proportional to 543,289.50 and 823,968

Step by Step Solution

1. Step 1: Write the proportion equation
   543,289.50 : 823,968 = 823,968 : x
2. Step 2: Convert to fraction form
   543,289.50/823,968 = 823,968/x
3. Step 3: Cross multiply
   543,289.50x = 823,968 × 823,968
4. Step 4: Simplify right side
   543,289.50x = 678,923,265,024
5. Step 5: Solve for x
   x = 678,923,265,024/543,289.50
6. Step 6: Final answer
   x = 1,249,652.84