Finding the Third Proportional to 86,215.64 and 131,185.83

Step by Step Solution

1. Step 1: Write the proportion equation
   86,215.64 : 131,185.83 = 131,185.83 : x
2. Step 2: Convert to fraction form
   86,215.64/131,185.83 = 131,185.83/x
3. Step 3: Cross multiply
   86,215.64x = 131,185.83 × 131,185.83
4. Step 4: Simplify right side
   86,215.64x = 17,209,721,500.84
5. Step 5: Solve for x
   x = 17,209,721,500.84/86,215.64
6. Step 6: Final answer
   x = 199,612.52