Finding the Third Proportional to 769,556.25 and 1,686,870

Step by Step Solution

1. Step 1: Write the proportion equation
   769,556.25 : 1,686,870 = 1,686,870 : x
2. Step 2: Convert to fraction form
   769,556.25/1,686,870 = 1,686,870/x
3. Step 3: Cross multiply
   769,556.25x = 1,686,870 × 1,686,870
4. Step 4: Simplify right side
   769,556.25x = 2,845,530,396,900
5. Step 5: Solve for x
   x = 2,845,530,396,900/769,556.25
6. Step 6: Final answer
   x = 3,697,624.96