Finding the Third Proportional to 9,586,640 and 20,866,144

Step by Step Solution

1. Step 1: Write the proportion equation
   9,586,640 : 20,866,144 = 20,866,144 : x
2. Step 2: Convert to fraction form
   9,586,640/20,866,144 = 20,866,144/x
3. Step 3: Cross multiply
   9,586,640x = 20,866,144 × 20,866,144
4. Step 4: Simplify right side
   9,586,640x = 435,395,965,428,736
5. Step 5: Solve for x
   x = 435,395,965,428,736/9,586,640
6. Step 6: Final answer
   x = 45,416,951.66