Finding the Third Proportional to 681,718 and 1,036,740

Step by Step Solution

1. Step 1: Write the proportion equation
   681,718 : 1,036,740 = 1,036,740 : x
2. Step 2: Convert to fraction form
   681,718/1,036,740 = 1,036,740/x
3. Step 3: Cross multiply
   681,718x = 1,036,740 × 1,036,740
4. Step 4: Simplify right side
   681,718x = 1,074,829,827,600
5. Step 5: Solve for x
   x = 1,074,829,827,600/681,718
6. Step 6: Final answer
   x = 1,576,648.74