Finding the Third Proportional to 388,144.50 and 848,703

Step by Step Solution

1. Step 1: Write the proportion equation
   388,144.50 : 848,703 = 848,703 : x
2. Step 2: Convert to fraction form
   388,144.50/848,703 = 848,703/x
3. Step 3: Cross multiply
   388,144.50x = 848,703 × 848,703
4. Step 4: Simplify right side
   388,144.50x = 720,296,782,209
5. Step 5: Solve for x
   x = 720,296,782,209/388,144.50
6. Step 6: Final answer
   x = 1,855,743.88