Finding the Third Proportional to 96,007.50 and 128,457

Step by Step Solution

1. Step 1: Write the proportion equation
   96,007.50 : 128,457 = 128,457 : x
2. Step 2: Convert to fraction form
   96,007.50/128,457 = 128,457/x
3. Step 3: Cross multiply
   96,007.50x = 128,457 × 128,457
4. Step 4: Simplify right side
   96,007.50x = 16,501,200,849
5. Step 5: Solve for x
   x = 16,501,200,849/96,007.50
6. Step 6: Final answer
   x = 171,874.08