Finding the Third Proportional to 72,189 and 108,598.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,189 : 108,598.50 = 108,598.50 : x
2. Step 2: Convert to fraction form
   72,189/108,598.50 = 108,598.50/x
3. Step 3: Cross multiply
   72,189x = 108,598.50 × 108,598.50
4. Step 4: Simplify right side
   72,189x = 11,793,634,202.25
5. Step 5: Solve for x
   x = 11,793,634,202.25/72,189
6. Step 6: Final answer
   x = 163,371.62