Finding the Third Proportional to 836,406 and 1,780,704

Step by Step Solution

1. Step 1: Write the proportion equation
   836,406 : 1,780,704 = 1,780,704 : x
2. Step 2: Convert to fraction form
   836,406/1,780,704 = 1,780,704/x
3. Step 3: Cross multiply
   836,406x = 1,780,704 × 1,780,704
4. Step 4: Simplify right side
   836,406x = 3,170,906,735,616
5. Step 5: Solve for x
   x = 3,170,906,735,616/836,406
6. Step 6: Final answer
   x = 3,791,109.50