Finding the Third Proportional to 705,788 and 1,665,864

Step by Step Solution

1. Step 1: Write the proportion equation
   705,788 : 1,665,864 = 1,665,864 : x
2. Step 2: Convert to fraction form
   705,788/1,665,864 = 1,665,864/x
3. Step 3: Cross multiply
   705,788x = 1,665,864 × 1,665,864
4. Step 4: Simplify right side
   705,788x = 2,775,102,866,496
5. Step 5: Solve for x
   x = 2,775,102,866,496/705,788
6. Step 6: Final answer
   x = 3,931,921.29