Finding the Third Proportional to 59,990 and 89,653

Step by Step Solution

1. Step 1: Write the proportion equation
   59,990 : 89,653 = 89,653 : x
2. Step 2: Convert to fraction form
   59,990/89,653 = 89,653/x
3. Step 3: Cross multiply
   59,990x = 89,653 × 89,653
4. Step 4: Simplify right side
   59,990x = 8,037,660,409
5. Step 5: Solve for x
   x = 8,037,660,409/59,990
6. Step 6: Final answer
   x = 133,983.34