Finding the Third Proportional to 705,790 and 1,665,869

Step by Step Solution

1. Step 1: Write the proportion equation
   705,790 : 1,665,869 = 1,665,869 : x
2. Step 2: Convert to fraction form
   705,790/1,665,869 = 1,665,869/x
3. Step 3: Cross multiply
   705,790x = 1,665,869 × 1,665,869
4. Step 4: Simplify right side
   705,790x = 2,775,119,525,161
5. Step 5: Solve for x
   x = 2,775,119,525,161/705,790
6. Step 6: Final answer
   x = 3,931,933.76