Finding the Third Proportional to 687,240 and 1,010,250

Step by Step Solution

1. Step 1: Write the proportion equation
   687,240 : 1,010,250 = 1,010,250 : x
2. Step 2: Convert to fraction form
   687,240/1,010,250 = 1,010,250/x
3. Step 3: Cross multiply
   687,240x = 1,010,250 × 1,010,250
4. Step 4: Simplify right side
   687,240x = 1,020,605,062,500
5. Step 5: Solve for x
   x = 1,020,605,062,500/687,240
6. Step 6: Final answer
   x = 1,485,078.08