Finding the Third Proportional to 587,871 and 879,521.50

Step by Step Solution

1. Step 1: Write the proportion equation
   587,871 : 879,521.50 = 879,521.50 : x
2. Step 2: Convert to fraction form
   587,871/879,521.50 = 879,521.50/x
3. Step 3: Cross multiply
   587,871x = 879,521.50 × 879,521.50
4. Step 4: Simplify right side
   587,871x = 773,558,068,962.25
5. Step 5: Solve for x
   x = 773,558,068,962.25/587,871
6. Step 6: Final answer
   x = 1,315,863.63