Finding the Third Proportional to 92,072 and 139,353

Step by Step Solution

1. Step 1: Write the proportion equation
   92,072 : 139,353 = 139,353 : x
2. Step 2: Convert to fraction form
   92,072/139,353 = 139,353/x
3. Step 3: Cross multiply
   92,072x = 139,353 × 139,353
4. Step 4: Simplify right side
   92,072x = 19,419,258,609
5. Step 5: Solve for x
   x = 19,419,258,609/92,072
6. Step 6: Final answer
   x = 210,913.83