Finding the Third Proportional to 61,185.75 and 86,164.13

Step by Step Solution

1. Step 1: Write the proportion equation
   61,185.75 : 86,164.13 = 86,164.13 : x
2. Step 2: Convert to fraction form
   61,185.75/86,164.13 = 86,164.13/x
3. Step 3: Cross multiply
   61,185.75x = 86,164.13 × 86,164.13
4. Step 4: Simplify right side
   61,185.75x = 7,424,256,437.02
5. Step 5: Solve for x
   x = 7,424,256,437.02/61,185.75
6. Step 6: Final answer
   x = 121,339.63