Finding the Third Proportional to 687,180 and 1,048,538

Step by Step Solution

1. Step 1: Write the proportion equation
   687,180 : 1,048,538 = 1,048,538 : x
2. Step 2: Convert to fraction form
   687,180/1,048,538 = 1,048,538/x
3. Step 3: Cross multiply
   687,180x = 1,048,538 × 1,048,538
4. Step 4: Simplify right side
   687,180x = 1,099,431,937,444
5. Step 5: Solve for x
   x = 1,099,431,937,444/687,180
6. Step 6: Final answer
   x = 1,599,918.42