Finding the Third Proportional to 278,734.50 and 608,662.69

Step by Step Solution

1. Step 1: Write the proportion equation
   278,734.50 : 608,662.69 = 608,662.69 : x
2. Step 2: Convert to fraction form
   278,734.50/608,662.69 = 608,662.69/x
3. Step 3: Cross multiply
   278,734.50x = 608,662.69 × 608,662.69
4. Step 4: Simplify right side
   278,734.50x = 370,470,267,154.72
5. Step 5: Solve for x
   x = 370,470,267,154.72/278,734.50
6. Step 6: Final answer
   x = 1,329,115.22