Finding the Third Proportional to 59,858 and 91,086

Step by Step Solution

1. Step 1: Write the proportion equation
   59,858 : 91,086 = 91,086 : x
2. Step 2: Convert to fraction form
   59,858/91,086 = 91,086/x
3. Step 3: Cross multiply
   59,858x = 91,086 × 91,086
4. Step 4: Simplify right side
   59,858x = 8,296,659,396
5. Step 5: Solve for x
   x = 8,296,659,396/59,858
6. Step 6: Final answer
   x = 138,605.69