Finding the Third Proportional to 78,371.25 and 121,086

Step by Step Solution

1. Step 1: Write the proportion equation
   78,371.25 : 121,086 = 121,086 : x
2. Step 2: Convert to fraction form
   78,371.25/121,086 = 121,086/x
3. Step 3: Cross multiply
   78,371.25x = 121,086 × 121,086
4. Step 4: Simplify right side
   78,371.25x = 14,661,819,396
5. Step 5: Solve for x
   x = 14,661,819,396/78,371.25
6. Step 6: Final answer
   x = 187,081.61