Finding the Third Proportional to 78,843.75 and 122,418

Step by Step Solution

1. Step 1: Write the proportion equation
   78,843.75 : 122,418 = 122,418 : x
2. Step 2: Convert to fraction form
   78,843.75/122,418 = 122,418/x
3. Step 3: Cross multiply
   78,843.75x = 122,418 × 122,418
4. Step 4: Simplify right side
   78,843.75x = 14,986,166,724
5. Step 5: Solve for x
   x = 14,986,166,724/78,843.75
6. Step 6: Final answer
   x = 190,074.25