Finding the Third Proportional to 20,547 and 42,065

Step by Step Solution

1. Step 1: Write the proportion equation
   20,547 : 42,065 = 42,065 : x
2. Step 2: Convert to fraction form
   20,547/42,065 = 42,065/x
3. Step 3: Cross multiply
   20,547x = 42,065 × 42,065
4. Step 4: Simplify right side
   20,547x = 1,769,464,225
5. Step 5: Solve for x
   x = 1,769,464,225/20,547
6. Step 6: Final answer
   x = 86,117.89