Finding the Third Proportional to 289,636.50 and 605,742

Step by Step Solution

1. Step 1: Write the proportion equation
   289,636.50 : 605,742 = 605,742 : x
2. Step 2: Convert to fraction form
   289,636.50/605,742 = 605,742/x
3. Step 3: Cross multiply
   289,636.50x = 605,742 × 605,742
4. Step 4: Simplify right side
   289,636.50x = 366,923,370,564
5. Step 5: Solve for x
   x = 366,923,370,564/289,636.50
6. Step 6: Final answer
   x = 1,266,840.92