Finding the Third Proportional to 92,172 and 139,104

Step by Step Solution

1. Step 1: Write the proportion equation
   92,172 : 139,104 = 139,104 : x
2. Step 2: Convert to fraction form
   92,172/139,104 = 139,104/x
3. Step 3: Cross multiply
   92,172x = 139,104 × 139,104
4. Step 4: Simplify right side
   92,172x = 19,349,922,816
5. Step 5: Solve for x
   x = 19,349,922,816/92,172
6. Step 6: Final answer
   x = 209,932.77