Finding the Third Proportional to 85,512 and 187,116

Step by Step Solution

1. Step 1: Write the proportion equation
   85,512 : 187,116 = 187,116 : x
2. Step 2: Convert to fraction form
   85,512/187,116 = 187,116/x
3. Step 3: Cross multiply
   85,512x = 187,116 × 187,116
4. Step 4: Simplify right side
   85,512x = 35,012,397,456
5. Step 5: Solve for x
   x = 35,012,397,456/85,512
6. Step 6: Final answer
   x = 409,444.26