Finding the Third Proportional to 39,840.19 and 86,924.81

Step by Step Solution

1. Step 1: Write the proportion equation
   39,840.19 : 86,924.81 = 86,924.81 : x
2. Step 2: Convert to fraction form
   39,840.19/86,924.81 = 86,924.81/x
3. Step 3: Cross multiply
   39,840.19x = 86,924.81 × 86,924.81
4. Step 4: Simplify right side
   39,840.19x = 7,555,923,028.16
5. Step 5: Solve for x
   x = 7,555,923,028.16/39,840.19
6. Step 6: Final answer
   x = 189,655.81