Finding the Third Proportional to 550,405.50 and 842,022

Step by Step Solution

1. Step 1: Write the proportion equation
   550,405.50 : 842,022 = 842,022 : x
2. Step 2: Convert to fraction form
   550,405.50/842,022 = 842,022/x
3. Step 3: Cross multiply
   550,405.50x = 842,022 × 842,022
4. Step 4: Simplify right side
   550,405.50x = 709,001,048,484
5. Step 5: Solve for x
   x = 709,001,048,484/550,405.50
6. Step 6: Final answer
   x = 1,288,143.10