Finding the Third Proportional to 863,131.50 and 1,306,692

Step by Step Solution

1. Step 1: Write the proportion equation
   863,131.50 : 1,306,692 = 1,306,692 : x
2. Step 2: Convert to fraction form
   863,131.50/1,306,692 = 1,306,692/x
3. Step 3: Cross multiply
   863,131.50x = 1,306,692 × 1,306,692
4. Step 4: Simplify right side
   863,131.50x = 1,707,443,982,864
5. Step 5: Solve for x
   x = 1,707,443,982,864/863,131.50
6. Step 6: Final answer
   x = 1,978,196.81