Finding the Third Proportional to 86,896.13 and 131,569.31

Step by Step Solution

1. Step 1: Write the proportion equation
   86,896.13 : 131,569.31 = 131,569.31 : x
2. Step 2: Convert to fraction form
   86,896.13/131,569.31 = 131,569.31/x
3. Step 3: Cross multiply
   86,896.13x = 131,569.31 × 131,569.31
4. Step 4: Simplify right side
   86,896.13x = 17,310,483,991.72
5. Step 5: Solve for x
   x = 17,310,483,991.72/86,896.13
6. Step 6: Final answer
   x = 199,208.93