Finding the Third Proportional to 78,960 and 104,328

Step by Step Solution

1. Step 1: Write the proportion equation
   78,960 : 104,328 = 104,328 : x
2. Step 2: Convert to fraction form
   78,960/104,328 = 104,328/x
3. Step 3: Cross multiply
   78,960x = 104,328 × 104,328
4. Step 4: Simplify right side
   78,960x = 10,884,331,584
5. Step 5: Solve for x
   x = 10,884,331,584/78,960
6. Step 6: Final answer
   x = 137,846.14