Finding the Third Proportional to 764,908 and 1,680,806

Step by Step Solution

1. Step 1: Write the proportion equation
   764,908 : 1,680,806 = 1,680,806 : x
2. Step 2: Convert to fraction form
   764,908/1,680,806 = 1,680,806/x
3. Step 3: Cross multiply
   764,908x = 1,680,806 × 1,680,806
4. Step 4: Simplify right side
   764,908x = 2,825,108,809,636
5. Step 5: Solve for x
   x = 2,825,108,809,636/764,908
6. Step 6: Final answer
   x = 3,693,396.87