Finding the Third Proportional to 42,211 and 90,071

Step by Step Solution

1. Step 1: Write the proportion equation
   42,211 : 90,071 = 90,071 : x
2. Step 2: Convert to fraction form
   42,211/90,071 = 90,071/x
3. Step 3: Cross multiply
   42,211x = 90,071 × 90,071
4. Step 4: Simplify right side
   42,211x = 8,112,785,041
5. Step 5: Solve for x
   x = 8,112,785,041/42,211
6. Step 6: Final answer
   x = 192,195.99