Finding the Third Proportional to 78,271 and 104,859

Step by Step Solution

1. Step 1: Write the proportion equation
   78,271 : 104,859 = 104,859 : x
2. Step 2: Convert to fraction form
   78,271/104,859 = 104,859/x
3. Step 3: Cross multiply
   78,271x = 104,859 × 104,859
4. Step 4: Simplify right side
   78,271x = 10,995,409,881
5. Step 5: Solve for x
   x = 10,995,409,881/78,271
6. Step 6: Final answer
   x = 140,478.72