Finding the Third Proportional to 263,885.50 and 579,150.50

Step by Step Solution

1. Step 1: Write the proportion equation
   263,885.50 : 579,150.50 = 579,150.50 : x
2. Step 2: Convert to fraction form
   263,885.50/579,150.50 = 579,150.50/x
3. Step 3: Cross multiply
   263,885.50x = 579,150.50 × 579,150.50
4. Step 4: Simplify right side
   263,885.50x = 335,415,301,650.25
5. Step 5: Solve for x
   x = 335,415,301,650.25/263,885.50
6. Step 6: Final answer
   x = 1,271,063.78