Finding the Third Proportional to 388,218 and 848,404

Step by Step Solution

1. Step 1: Write the proportion equation
   388,218 : 848,404 = 848,404 : x
2. Step 2: Convert to fraction form
   388,218/848,404 = 848,404/x
3. Step 3: Cross multiply
   388,218x = 848,404 × 848,404
4. Step 4: Simplify right side
   388,218x = 719,789,347,216
5. Step 5: Solve for x
   x = 719,789,347,216/388,218
6. Step 6: Final answer
   x = 1,854,085.46