Finding the Third Proportional to 92,215 and 139,170

Step by Step Solution

1. Step 1: Write the proportion equation
   92,215 : 139,170 = 139,170 : x
2. Step 2: Convert to fraction form
   92,215/139,170 = 139,170/x
3. Step 3: Cross multiply
   92,215x = 139,170 × 139,170
4. Step 4: Simplify right side
   92,215x = 19,368,288,900
5. Step 5: Solve for x
   x = 19,368,288,900/92,215
6. Step 6: Final answer
   x = 210,034.04