Finding the Third Proportional to 451,293 and 991,144

Step by Step Solution

1. Step 1: Write the proportion equation
   451,293 : 991,144 = 991,144 : x
2. Step 2: Convert to fraction form
   451,293/991,144 = 991,144/x
3. Step 3: Cross multiply
   451,293x = 991,144 × 991,144
4. Step 4: Simplify right side
   451,293x = 982,366,428,736
5. Step 5: Solve for x
   x = 982,366,428,736/451,293
6. Step 6: Final answer
   x = 2,176,781.89