Finding the Third Proportional to 59,990 and 89,654

Step by Step Solution

1. Step 1: Write the proportion equation
   59,990 : 89,654 = 89,654 : x
2. Step 2: Convert to fraction form
   59,990/89,654 = 89,654/x
3. Step 3: Cross multiply
   59,990x = 89,654 × 89,654
4. Step 4: Simplify right side
   59,990x = 8,037,839,716
5. Step 5: Solve for x
   x = 8,037,839,716/59,990
6. Step 6: Final answer
   x = 133,986.33