Finding the Third Proportional to 90,016 and 208,391

Step by Step Solution

1. Step 1: Write the proportion equation
   90,016 : 208,391 = 208,391 : x
2. Step 2: Convert to fraction form
   90,016/208,391 = 208,391/x
3. Step 3: Cross multiply
   90,016x = 208,391 × 208,391
4. Step 4: Simplify right side
   90,016x = 43,426,808,881
5. Step 5: Solve for x
   x = 43,426,808,881/90,016
6. Step 6: Final answer
   x = 482,434.33