Finding the Third Proportional to 789,780 and 1,705,644

Step by Step Solution

1. Step 1: Write the proportion equation
   789,780 : 1,705,644 = 1,705,644 : x
2. Step 2: Convert to fraction form
   789,780/1,705,644 = 1,705,644/x
3. Step 3: Cross multiply
   789,780x = 1,705,644 × 1,705,644
4. Step 4: Simplify right side
   789,780x = 2,909,221,454,736
5. Step 5: Solve for x
   x = 2,909,221,454,736/789,780
6. Step 6: Final answer
   x = 3,683,584.61