Finding the Third Proportional to 58,065 and 86,871

Step by Step Solution

1. Step 1: Write the proportion equation
   58,065 : 86,871 = 86,871 : x
2. Step 2: Convert to fraction form
   58,065/86,871 = 86,871/x
3. Step 3: Cross multiply
   58,065x = 86,871 × 86,871
4. Step 4: Simplify right side
   58,065x = 7,546,570,641
5. Step 5: Solve for x
   x = 7,546,570,641/58,065
6. Step 6: Final answer
   x = 129,967.63