Finding the Third Proportional to 78,630 and 104,760

Step by Step Solution

1. Step 1: Write the proportion equation
   78,630 : 104,760 = 104,760 : x
2. Step 2: Convert to fraction form
   78,630/104,760 = 104,760/x
3. Step 3: Cross multiply
   78,630x = 104,760 × 104,760
4. Step 4: Simplify right side
   78,630x = 10,974,657,600
5. Step 5: Solve for x
   x = 10,974,657,600/78,630
6. Step 6: Final answer
   x = 139,573.41