Finding the Third Proportional to 278,003.39 and 606,983.20

Step by Step Solution

1. Step 1: Write the proportion equation
   278,003.39 : 606,983.20 = 606,983.20 : x
2. Step 2: Convert to fraction form
   278,003.39/606,983.20 = 606,983.20/x
3. Step 3: Cross multiply
   278,003.39x = 606,983.20 × 606,983.20
4. Step 4: Simplify right side
   278,003.39x = 368,428,608,875.89
5. Step 5: Solve for x
   x = 368,428,608,875.89/278,003.39
6. Step 6: Final answer
   x = 1,325,266.60