Finding the Third Proportional to 42,681 and 89,858

Step by Step Solution

1. Step 1: Write the proportion equation
   42,681 : 89,858 = 89,858 : x
2. Step 2: Convert to fraction form
   42,681/89,858 = 89,858/x
3. Step 3: Cross multiply
   42,681x = 89,858 × 89,858
4. Step 4: Simplify right side
   42,681x = 8,074,460,164
5. Step 5: Solve for x
   x = 8,074,460,164/42,681
6. Step 6: Final answer
   x = 189,181.61