Finding the Third Proportional to 769,687.31 and 1,639,019.81

Step by Step Solution

1. Step 1: Write the proportion equation
   769,687.31 : 1,639,019.81 = 1,639,019.81 : x
2. Step 2: Convert to fraction form
   769,687.31/1,639,019.81 = 1,639,019.81/x
3. Step 3: Cross multiply
   769,687.31x = 1,639,019.81 × 1,639,019.81
4. Step 4: Simplify right side
   769,687.31x = 2,686,385,945,767.54
5. Step 5: Solve for x
   x = 2,686,385,945,767.54/769,687.31
6. Step 6: Final answer
   x = 3,490,230.26