Finding the Third Proportional to 86,859 and 130,936.50

Step by Step Solution

1. Step 1: Write the proportion equation
   86,859 : 130,936.50 = 130,936.50 : x
2. Step 2: Convert to fraction form
   86,859/130,936.50 = 130,936.50/x
3. Step 3: Cross multiply
   86,859x = 130,936.50 × 130,936.50
4. Step 4: Simplify right side
   86,859x = 17,144,367,032.25
5. Step 5: Solve for x
   x = 17,144,367,032.25/86,859
6. Step 6: Final answer
   x = 197,381.58