Finding the Third Proportional to 19,518.75 and 42,000.75

Step by Step Solution

1. Step 1: Write the proportion equation
   19,518.75 : 42,000.75 = 42,000.75 : x
2. Step 2: Convert to fraction form
   19,518.75/42,000.75 = 42,000.75/x
3. Step 3: Cross multiply
   19,518.75x = 42,000.75 × 42,000.75
4. Step 4: Simplify right side
   19,518.75x = 1,764,063,000.56
5. Step 5: Solve for x
   x = 1,764,063,000.56/19,518.75
6. Step 6: Final answer
   x = 90,377.87