Finding the Third Proportional to 547,377 and 871,661.50

Step by Step Solution

1. Step 1: Write the proportion equation
   547,377 : 871,661.50 = 871,661.50 : x
2. Step 2: Convert to fraction form
   547,377/871,661.50 = 871,661.50/x
3. Step 3: Cross multiply
   547,377x = 871,661.50 × 871,661.50
4. Step 4: Simplify right side
   547,377x = 759,793,770,582.25
5. Step 5: Solve for x
   x = 759,793,770,582.25/547,377
6. Step 6: Final answer
   x = 1,388,063.02