Finding the Third Proportional to 411,871.50 and 886,945.78

Step by Step Solution

1. Step 1: Write the proportion equation
   411,871.50 : 886,945.78 = 886,945.78 : x
2. Step 2: Convert to fraction form
   411,871.50/886,945.78 = 886,945.78/x
3. Step 3: Cross multiply
   411,871.50x = 886,945.78 × 886,945.78
4. Step 4: Simplify right side
   411,871.50x = 786,672,818,877.17
5. Step 5: Solve for x
   x = 786,672,818,877.17/411,871.50
6. Step 6: Final answer
   x = 1,909,995.76