Finding the Third Proportional to 19,479.75 and 42,073.88

Step by Step Solution

1. Step 1: Write the proportion equation
   19,479.75 : 42,073.88 = 42,073.88 : x
2. Step 2: Convert to fraction form
   19,479.75/42,073.88 = 42,073.88/x
3. Step 3: Cross multiply
   19,479.75x = 42,073.88 × 42,073.88
4. Step 4: Simplify right side
   19,479.75x = 1,770,210,957.52
5. Step 5: Solve for x
   x = 1,770,210,957.52/19,479.75
6. Step 6: Final answer
   x = 90,874.42