Finding the Third Proportional to 42,957 and 64,515

Step by Step Solution

1. Step 1: Write the proportion equation
   42,957 : 64,515 = 64,515 : x
2. Step 2: Convert to fraction form
   42,957/64,515 = 64,515/x
3. Step 3: Cross multiply
   42,957x = 64,515 × 64,515
4. Step 4: Simplify right side
   42,957x = 4,162,185,225
5. Step 5: Solve for x
   x = 4,162,185,225/42,957
6. Step 6: Final answer
   x = 96,891.90