Finding the Third Proportional to 64,717.50 and 132,570

Step by Step Solution

1. Step 1: Write the proportion equation
   64,717.50 : 132,570 = 132,570 : x
2. Step 2: Convert to fraction form
   64,717.50/132,570 = 132,570/x
3. Step 3: Cross multiply
   64,717.50x = 132,570 × 132,570
4. Step 4: Simplify right side
   64,717.50x = 17,574,804,900
5. Step 5: Solve for x
   x = 17,574,804,900/64,717.50
6. Step 6: Final answer
   x = 271,561.86