Finding the Third Proportional to 387,183 and 580,936.50

Step by Step Solution

1. Step 1: Write the proportion equation
   387,183 : 580,936.50 = 580,936.50 : x
2. Step 2: Convert to fraction form
   387,183/580,936.50 = 580,936.50/x
3. Step 3: Cross multiply
   387,183x = 580,936.50 × 580,936.50
4. Step 4: Simplify right side
   387,183x = 337,487,217,032.25
5. Step 5: Solve for x
   x = 337,487,217,032.25/387,183
6. Step 6: Final answer
   x = 871,647.82