Finding the Third Proportional to 38,618 and 57,590

Step by Step Solution

1. Step 1: Write the proportion equation
   38,618 : 57,590 = 57,590 : x
2. Step 2: Convert to fraction form
   38,618/57,590 = 57,590/x
3. Step 3: Cross multiply
   38,618x = 57,590 × 57,590
4. Step 4: Simplify right side
   38,618x = 3,316,608,100
5. Step 5: Solve for x
   x = 3,316,608,100/38,618
6. Step 6: Final answer
   x = 85,882.44