Finding the Third Proportional to 64,568.25 and 139,858.88

Step by Step Solution

1. Step 1: Write the proportion equation
   64,568.25 : 139,858.88 = 139,858.88 : x
2. Step 2: Convert to fraction form
   64,568.25/139,858.88 = 139,858.88/x
3. Step 3: Cross multiply
   64,568.25x = 139,858.88 × 139,858.88
4. Step 4: Simplify right side
   64,568.25x = 19,560,504,916.27
5. Step 5: Solve for x
   x = 19,560,504,916.27/64,568.25
6. Step 6: Final answer
   x = 302,943.09