Finding the Third Proportional to 579,397.50 and 779,667.75

Step by Step Solution

1. Step 1: Write the proportion equation
   579,397.50 : 779,667.75 = 779,667.75 : x
2. Step 2: Convert to fraction form
   579,397.50/779,667.75 = 779,667.75/x
3. Step 3: Cross multiply
   579,397.50x = 779,667.75 × 779,667.75
4. Step 4: Simplify right side
   579,397.50x = 607,881,800,390.06
5. Step 5: Solve for x
   x = 607,881,800,390.06/579,397.50
6. Step 6: Final answer
   x = 1,049,161.93