Finding the Third Proportional to 550,581.75 and 807,678

Step by Step Solution

1. Step 1: Write the proportion equation
   550,581.75 : 807,678 = 807,678 : x
2. Step 2: Convert to fraction form
   550,581.75/807,678 = 807,678/x
3. Step 3: Cross multiply
   550,581.75x = 807,678 × 807,678
4. Step 4: Simplify right side
   550,581.75x = 652,343,751,684
5. Step 5: Solve for x
   x = 652,343,751,684/550,581.75
6. Step 6: Final answer
   x = 1,184,826.33