Finding the Third Proportional to 89,343 and 186,036

Step by Step Solution

1. Step 1: Write the proportion equation
   89,343 : 186,036 = 186,036 : x
2. Step 2: Convert to fraction form
   89,343/186,036 = 186,036/x
3. Step 3: Cross multiply
   89,343x = 186,036 × 186,036
4. Step 4: Simplify right side
   89,343x = 34,609,393,296
5. Step 5: Solve for x
   x = 34,609,393,296/89,343
6. Step 6: Final answer
   x = 387,376.66