Finding the Third Proportional to 388,072.50 and 848,280

Step by Step Solution

1. Step 1: Write the proportion equation
   388,072.50 : 848,280 = 848,280 : x
2. Step 2: Convert to fraction form
   388,072.50/848,280 = 848,280/x
3. Step 3: Cross multiply
   388,072.50x = 848,280 × 848,280
4. Step 4: Simplify right side
   388,072.50x = 719,578,958,400
5. Step 5: Solve for x
   x = 719,578,958,400/388,072.50
6. Step 6: Final answer
   x = 1,854,238.47