Finding the Third Proportional to 209,858 and 449,659.50

Step by Step Solution

1. Step 1: Write the proportion equation
   209,858 : 449,659.50 = 449,659.50 : x
2. Step 2: Convert to fraction form
   209,858/449,659.50 = 449,659.50/x
3. Step 3: Cross multiply
   209,858x = 449,659.50 × 449,659.50
4. Step 4: Simplify right side
   209,858x = 202,193,665,940.25
5. Step 5: Solve for x
   x = 202,193,665,940.25/209,858
6. Step 6: Final answer
   x = 963,478.48