Finding the Third Proportional to 587,468 and 1,286,878

Step by Step Solution

1. Step 1: Write the proportion equation
   587,468 : 1,286,878 = 1,286,878 : x
2. Step 2: Convert to fraction form
   587,468/1,286,878 = 1,286,878/x
3. Step 3: Cross multiply
   587,468x = 1,286,878 × 1,286,878
4. Step 4: Simplify right side
   587,468x = 1,656,054,986,884
5. Step 5: Solve for x
   x = 1,656,054,986,884/587,468
6. Step 6: Final answer
   x = 2,818,970.54