Finding the Third Proportional to 59,718 and 90,249

Step by Step Solution

1. Step 1: Write the proportion equation
   59,718 : 90,249 = 90,249 : x
2. Step 2: Convert to fraction form
   59,718/90,249 = 90,249/x
3. Step 3: Cross multiply
   59,718x = 90,249 × 90,249
4. Step 4: Simplify right side
   59,718x = 8,144,882,001
5. Step 5: Solve for x
   x = 8,144,882,001/59,718
6. Step 6: Final answer
   x = 136,389.06