Finding the Third Proportional to 92,721 and 139,019

Step by Step Solution

1. Step 1: Write the proportion equation
   92,721 : 139,019 = 139,019 : x
2. Step 2: Convert to fraction form
   92,721/139,019 = 139,019/x
3. Step 3: Cross multiply
   92,721x = 139,019 × 139,019
4. Step 4: Simplify right side
   92,721x = 19,326,282,361
5. Step 5: Solve for x
   x = 19,326,282,361/92,721
6. Step 6: Final answer
   x = 208,434.79