Finding the Third Proportional to 280,589.63 and 613,667.25

Step by Step Solution

1. Step 1: Write the proportion equation
   280,589.63 : 613,667.25 = 613,667.25 : x
2. Step 2: Convert to fraction form
   280,589.63/613,667.25 = 613,667.25/x
3. Step 3: Cross multiply
   280,589.63x = 613,667.25 × 613,667.25
4. Step 4: Simplify right side
   280,589.63x = 376,587,493,722.56
5. Step 5: Solve for x
   x = 376,587,493,722.56/280,589.63
6. Step 6: Final answer
   x = 1,342,129.07