Finding the Third Proportional to 439,876 and 980,840

Step by Step Solution

1. Step 1: Write the proportion equation
   439,876 : 980,840 = 980,840 : x
2. Step 2: Convert to fraction form
   439,876/980,840 = 980,840/x
3. Step 3: Cross multiply
   439,876x = 980,840 × 980,840
4. Step 4: Simplify right side
   439,876x = 962,047,105,600
5. Step 5: Solve for x
   x = 962,047,105,600/439,876
6. Step 6: Final answer
   x = 2,187,087.06