Finding the Third Proportional to 401,746 and 836,780

Step by Step Solution

1. Step 1: Write the proportion equation
   401,746 : 836,780 = 836,780 : x
2. Step 2: Convert to fraction form
   401,746/836,780 = 836,780/x
3. Step 3: Cross multiply
   401,746x = 836,780 × 836,780
4. Step 4: Simplify right side
   401,746x = 700,200,768,400
5. Step 5: Solve for x
   x = 700,200,768,400/401,746
6. Step 6: Final answer
   x = 1,742,894.19