Finding the Third Proportional to 687,059.72 and 903,481.59

Step by Step Solution

1. Step 1: Write the proportion equation
   687,059.72 : 903,481.59 = 903,481.59 : x
2. Step 2: Convert to fraction form
   687,059.72/903,481.59 = 903,481.59/x
3. Step 3: Cross multiply
   687,059.72x = 903,481.59 × 903,481.59
4. Step 4: Simplify right side
   687,059.72x = 816,278,990,245.04
5. Step 5: Solve for x
   x = 816,278,990,245.04/687,059.72
6. Step 6: Final answer
   x = 1,188,075.75