Finding the Third Proportional to 72,457.50 and 108,018

Step by Step Solution

1. Step 1: Write the proportion equation
   72,457.50 : 108,018 = 108,018 : x
2. Step 2: Convert to fraction form
   72,457.50/108,018 = 108,018/x
3. Step 3: Cross multiply
   72,457.50x = 108,018 × 108,018
4. Step 4: Simplify right side
   72,457.50x = 11,667,888,324
5. Step 5: Solve for x
   x = 11,667,888,324/72,457.50
6. Step 6: Final answer
   x = 161,030.79