Finding the Third Proportional to 19,886.81 and 42,885.56

Step by Step Solution

1. Step 1: Write the proportion equation
   19,886.81 : 42,885.56 = 42,885.56 : x
2. Step 2: Convert to fraction form
   19,886.81/42,885.56 = 42,885.56/x
3. Step 3: Cross multiply
   19,886.81x = 42,885.56 × 42,885.56
4. Step 4: Simplify right side
   19,886.81x = 1,839,171,470.94
5. Step 5: Solve for x
   x = 1,839,171,470.94/19,886.81
6. Step 6: Final answer
   x = 92,481.96