Finding the Third Proportional to 381,877.50 and 839,997

Step by Step Solution

1. Step 1: Write the proportion equation
   381,877.50 : 839,997 = 839,997 : x
2. Step 2: Convert to fraction form
   381,877.50/839,997 = 839,997/x
3. Step 3: Cross multiply
   381,877.50x = 839,997 × 839,997
4. Step 4: Simplify right side
   381,877.50x = 705,594,960,009
5. Step 5: Solve for x
   x = 705,594,960,009/381,877.50
6. Step 6: Final answer
   x = 1,847,699.75