Finding the Third Proportional to 98,661.94 and 209,622.38

Step by Step Solution

1. Step 1: Write the proportion equation
   98,661.94 : 209,622.38 = 209,622.38 : x
2. Step 2: Convert to fraction form
   98,661.94/209,622.38 = 209,622.38/x
3. Step 3: Cross multiply
   98,661.94x = 209,622.38 × 209,622.38
4. Step 4: Simplify right side
   98,661.94x = 43,941,540,100.64
5. Step 5: Solve for x
   x = 43,941,540,100.64/98,661.94
6. Step 6: Final answer
   x = 445,374.79