Finding the Third Proportional to 103,241.25 and 139,309.88

Step by Step Solution

1. Step 1: Write the proportion equation
   103,241.25 : 139,309.88 = 139,309.88 : x
2. Step 2: Convert to fraction form
   103,241.25/139,309.88 = 139,309.88/x
3. Step 3: Cross multiply
   103,241.25x = 139,309.88 × 139,309.88
4. Step 4: Simplify right side
   103,241.25x = 19,407,241,272.52
5. Step 5: Solve for x
   x = 19,407,241,272.52/103,241.25
6. Step 6: Final answer
   x = 187,979.53