Finding the Third Proportional to 92,243 and 139,009

Step by Step Solution

1. Step 1: Write the proportion equation
   92,243 : 139,009 = 139,009 : x
2. Step 2: Convert to fraction form
   92,243/139,009 = 139,009/x
3. Step 3: Cross multiply
   92,243x = 139,009 × 139,009
4. Step 4: Simplify right side
   92,243x = 19,323,502,081
5. Step 5: Solve for x
   x = 19,323,502,081/92,243
6. Step 6: Final answer
   x = 209,484.75