Finding the Third Proportional to 449,139 and 985,228.50

Step by Step Solution

1. Step 1: Write the proportion equation
   449,139 : 985,228.50 = 985,228.50 : x
2. Step 2: Convert to fraction form
   449,139/985,228.50 = 985,228.50/x
3. Step 3: Cross multiply
   449,139x = 985,228.50 × 985,228.50
4. Step 4: Simplify right side
   449,139x = 970,675,197,212.25
5. Step 5: Solve for x
   x = 970,675,197,212.25/449,139
6. Step 6: Final answer
   x = 2,161,191.07