Finding the Third Proportional to 396,834.50 and 872,401

Step by Step Solution

1. Step 1: Write the proportion equation
   396,834.50 : 872,401 = 872,401 : x
2. Step 2: Convert to fraction form
   396,834.50/872,401 = 872,401/x
3. Step 3: Cross multiply
   396,834.50x = 872,401 × 872,401
4. Step 4: Simplify right side
   396,834.50x = 761,083,504,801
5. Step 5: Solve for x
   x = 761,083,504,801/396,834.50
6. Step 6: Final answer
   x = 1,917,886.44