Finding the Third Proportional to 39,836.81 and 86,918.06

Step by Step Solution

1. Step 1: Write the proportion equation
   39,836.81 : 86,918.06 = 86,918.06 : x
2. Step 2: Convert to fraction form
   39,836.81/86,918.06 = 86,918.06/x
3. Step 3: Cross multiply
   39,836.81x = 86,918.06 × 86,918.06
4. Step 4: Simplify right side
   39,836.81x = 7,554,749,588.75
5. Step 5: Solve for x
   x = 7,554,749,588.75/39,836.81
6. Step 6: Final answer
   x = 189,642.42