Finding the Third Proportional to 762,780 and 1,626,864

Step by Step Solution

1. Step 1: Write the proportion equation
   762,780 : 1,626,864 = 1,626,864 : x
2. Step 2: Convert to fraction form
   762,780/1,626,864 = 1,626,864/x
3. Step 3: Cross multiply
   762,780x = 1,626,864 × 1,626,864
4. Step 4: Simplify right side
   762,780x = 2,646,686,474,496
5. Step 5: Solve for x
   x = 2,646,686,474,496/762,780
6. Step 6: Final answer
   x = 3,469,790.08