Finding the Third Proportional to 42,208.50 and 90,066.75

Step by Step Solution

1. Step 1: Write the proportion equation
   42,208.50 : 90,066.75 = 90,066.75 : x
2. Step 2: Convert to fraction form
   42,208.50/90,066.75 = 90,066.75/x
3. Step 3: Cross multiply
   42,208.50x = 90,066.75 × 90,066.75
4. Step 4: Simplify right side
   42,208.50x = 8,112,019,455.56
5. Step 5: Solve for x
   x = 8,112,019,455.56/42,208.50
6. Step 6: Final answer
   x = 192,189.24