Finding the Third Proportional to 388,111.50 and 848,637

Step by Step Solution

1. Step 1: Write the proportion equation
   388,111.50 : 848,637 = 848,637 : x
2. Step 2: Convert to fraction form
   388,111.50/848,637 = 848,637/x
3. Step 3: Cross multiply
   388,111.50x = 848,637 × 848,637
4. Step 4: Simplify right side
   388,111.50x = 720,184,757,769
5. Step 5: Solve for x
   x = 720,184,757,769/388,111.50
6. Step 6: Final answer
   x = 1,855,613.03