Finding the Third Proportional to 59,212 and 91,686

Step by Step Solution

1. Step 1: Write the proportion equation
   59,212 : 91,686 = 91,686 : x
2. Step 2: Convert to fraction form
   59,212/91,686 = 91,686/x
3. Step 3: Cross multiply
   59,212x = 91,686 × 91,686
4. Step 4: Simplify right side
   59,212x = 8,406,322,596
5. Step 5: Solve for x
   x = 8,406,322,596/59,212
6. Step 6: Final answer
   x = 141,969.91