Finding the Third Proportional to 131,710 and 188,215

Step by Step Solution

1. Step 1: Write the proportion equation
   131,710 : 188,215 = 188,215 : x
2. Step 2: Convert to fraction form
   131,710/188,215 = 188,215/x
3. Step 3: Cross multiply
   131,710x = 188,215 × 188,215
4. Step 4: Simplify right side
   131,710x = 35,424,886,225
5. Step 5: Solve for x
   x = 35,424,886,225/131,710
6. Step 6: Final answer
   x = 268,961.25