Finding the Third Proportional to 61,618 and 89,025

Step by Step Solution

1. Step 1: Write the proportion equation
   61,618 : 89,025 = 89,025 : x
2. Step 2: Convert to fraction form
   61,618/89,025 = 89,025/x
3. Step 3: Cross multiply
   61,618x = 89,025 × 89,025
4. Step 4: Simplify right side
   61,618x = 7,925,450,625
5. Step 5: Solve for x
   x = 7,925,450,625/61,618
6. Step 6: Final answer
   x = 128,622.33