Finding the Third Proportional to 1,686,756 and 2,680,290

Step by Step Solution

1. Step 1: Write the proportion equation
   1,686,756 : 2,680,290 = 2,680,290 : x
2. Step 2: Convert to fraction form
   1,686,756/2,680,290 = 2,680,290/x
3. Step 3: Cross multiply
   1,686,756x = 2,680,290 × 2,680,290
4. Step 4: Simplify right side
   1,686,756x = 7,183,954,484,100
5. Step 5: Solve for x
   x = 7,183,954,484,100/1,686,756
6. Step 6: Final answer
   x = 4,259,035.97