Finding the Third Proportional to 86,891.50 and 127,518

Step by Step Solution

1. Step 1: Write the proportion equation
   86,891.50 : 127,518 = 127,518 : x
2. Step 2: Convert to fraction form
   86,891.50/127,518 = 127,518/x
3. Step 3: Cross multiply
   86,891.50x = 127,518 × 127,518
4. Step 4: Simplify right side
   86,891.50x = 16,260,840,324
5. Step 5: Solve for x
   x = 16,260,840,324/86,891.50
6. Step 6: Final answer
   x = 187,139.60