Finding the Third Proportional to 764,916 and 1,680,828

Step by Step Solution

1. Step 1: Write the proportion equation
   764,916 : 1,680,828 = 1,680,828 : x
2. Step 2: Convert to fraction form
   764,916/1,680,828 = 1,680,828/x
3. Step 3: Cross multiply
   764,916x = 1,680,828 × 1,680,828
4. Step 4: Simplify right side
   764,916x = 2,825,182,765,584
5. Step 5: Solve for x
   x = 2,825,182,765,584/764,916
6. Step 6: Final answer
   x = 3,693,454.92