Finding the Third Proportional to 139,097.25 and 208,676.25

Step by Step Solution

1. Step 1: Write the proportion equation
   139,097.25 : 208,676.25 = 208,676.25 : x
2. Step 2: Convert to fraction form
   139,097.25/208,676.25 = 208,676.25/x
3. Step 3: Cross multiply
   139,097.25x = 208,676.25 × 208,676.25
4. Step 4: Simplify right side
   139,097.25x = 43,545,777,314.06
5. Step 5: Solve for x
   x = 43,545,777,314.06/139,097.25
6. Step 6: Final answer
   x = 313,059.94