Finding the Third Proportional to 388,216 and 848,401

Step by Step Solution

1. Step 1: Write the proportion equation
   388,216 : 848,401 = 848,401 : x
2. Step 2: Convert to fraction form
   388,216/848,401 = 848,401/x
3. Step 3: Cross multiply
   388,216x = 848,401 × 848,401
4. Step 4: Simplify right side
   388,216x = 719,784,256,801
5. Step 5: Solve for x
   x = 719,784,256,801/388,216
6. Step 6: Final answer
   x = 1,854,081.89