Finding the Third Proportional to 257,912.75 and 566,878

Step by Step Solution

1. Step 1: Write the proportion equation
   257,912.75 : 566,878 = 566,878 : x
2. Step 2: Convert to fraction form
   257,912.75/566,878 = 566,878/x
3. Step 3: Cross multiply
   257,912.75x = 566,878 × 566,878
4. Step 4: Simplify right side
   257,912.75x = 321,350,666,884
5. Step 5: Solve for x
   x = 321,350,666,884/257,912.75
6. Step 6: Final answer
   x = 1,245,966.58