Finding the Third Proportional to 72,185 and 108,168

Step by Step Solution

1. Step 1: Write the proportion equation
   72,185 : 108,168 = 108,168 : x
2. Step 2: Convert to fraction form
   72,185/108,168 = 108,168/x
3. Step 3: Cross multiply
   72,185x = 108,168 × 108,168
4. Step 4: Simplify right side
   72,185x = 11,700,316,224
5. Step 5: Solve for x
   x = 11,700,316,224/72,185
6. Step 6: Final answer
   x = 162,087.92