Finding the Third Proportional to 587,868 and 859,118.50

Step by Step Solution

1. Step 1: Write the proportion equation
   587,868 : 859,118.50 = 859,118.50 : x
2. Step 2: Convert to fraction form
   587,868/859,118.50 = 859,118.50/x
3. Step 3: Cross multiply
   587,868x = 859,118.50 × 859,118.50
4. Step 4: Simplify right side
   587,868x = 738,084,597,042.25
5. Step 5: Solve for x
   x = 738,084,597,042.25/587,868
6. Step 6: Final answer
   x = 1,255,527.77