Finding the Third Proportional to 78,131.25 and 120,440.25

Step by Step Solution

1. Step 1: Write the proportion equation
   78,131.25 : 120,440.25 = 120,440.25 : x
2. Step 2: Convert to fraction form
   78,131.25/120,440.25 = 120,440.25/x
3. Step 3: Cross multiply
   78,131.25x = 120,440.25 × 120,440.25
4. Step 4: Simplify right side
   78,131.25x = 14,505,853,820.06
5. Step 5: Solve for x
   x = 14,505,853,820.06/78,131.25
6. Step 6: Final answer
   x = 185,660.08