Finding the Third Proportional to 109,467 and 139,873

Step by Step Solution

1. Step 1: Write the proportion equation
   109,467 : 139,873 = 139,873 : x
2. Step 2: Convert to fraction form
   109,467/139,873 = 139,873/x
3. Step 3: Cross multiply
   109,467x = 139,873 × 139,873
4. Step 4: Simplify right side
   109,467x = 19,564,456,129
5. Step 5: Solve for x
   x = 19,564,456,129/109,467
6. Step 6: Final answer
   x = 178,724.69