Finding the Third Proportional to 42,309.75 and 90,450.75

Step by Step Solution

1. Step 1: Write the proportion equation
   42,309.75 : 90,450.75 = 90,450.75 : x
2. Step 2: Convert to fraction form
   42,309.75/90,450.75 = 90,450.75/x
3. Step 3: Cross multiply
   42,309.75x = 90,450.75 × 90,450.75
4. Step 4: Simplify right side
   42,309.75x = 8,181,338,175.56
5. Step 5: Solve for x
   x = 8,181,338,175.56/42,309.75
6. Step 6: Final answer
   x = 193,367.68