Finding the Third Proportional to 687,251 and 1,010,280

Step by Step Solution

1. Step 1: Write the proportion equation
   687,251 : 1,010,280 = 1,010,280 : x
2. Step 2: Convert to fraction form
   687,251/1,010,280 = 1,010,280/x
3. Step 3: Cross multiply
   687,251x = 1,010,280 × 1,010,280
4. Step 4: Simplify right side
   687,251x = 1,020,665,678,400
5. Step 5: Solve for x
   x = 1,020,665,678,400/687,251
6. Step 6: Final answer
   x = 1,485,142.51