Finding the Third Proportional to 19,479.66 and 42,073.59

Step by Step Solution

1. Step 1: Write the proportion equation
   19,479.66 : 42,073.59 = 42,073.59 : x
2. Step 2: Convert to fraction form
   19,479.66/42,073.59 = 42,073.59/x
3. Step 3: Cross multiply
   19,479.66x = 42,073.59 × 42,073.59
4. Step 4: Simplify right side
   19,479.66x = 1,770,187,291.04
5. Step 5: Solve for x
   x = 1,770,187,291.04/19,479.66
6. Step 6: Final answer
   x = 90,873.64