Finding the Third Proportional to 789,666 and 1,155,021

Step by Step Solution

1. Step 1: Write the proportion equation
   789,666 : 1,155,021 = 1,155,021 : x
2. Step 2: Convert to fraction form
   789,666/1,155,021 = 1,155,021/x
3. Step 3: Cross multiply
   789,666x = 1,155,021 × 1,155,021
4. Step 4: Simplify right side
   789,666x = 1,334,073,510,441
5. Step 5: Solve for x
   x = 1,334,073,510,441/789,666
6. Step 6: Final answer
   x = 1,689,414.91