Finding the Third Proportional to 401,610 and 836,506.50

Step by Step Solution

1. Step 1: Write the proportion equation
   401,610 : 836,506.50 = 836,506.50 : x
2. Step 2: Convert to fraction form
   401,610/836,506.50 = 836,506.50/x
3. Step 3: Cross multiply
   401,610x = 836,506.50 × 836,506.50
4. Step 4: Simplify right side
   401,610x = 699,743,124,542.25
5. Step 5: Solve for x
   x = 699,743,124,542.25/401,610
6. Step 6: Final answer
   x = 1,742,344.87