Finding the Third Proportional to 41,639,728 and 90,229,200

Step by Step Solution

1. Step 1: Write the proportion equation
   41,639,728 : 90,229,200 = 90,229,200 : x
2. Step 2: Convert to fraction form
   41,639,728/90,229,200 = 90,229,200/x
3. Step 3: Cross multiply
   41,639,728x = 90,229,200 × 90,229,200
4. Step 4: Simplify right side
   41,639,728x = 8,141,308,532,640,000
5. Step 5: Solve for x
   x = 8,141,308,532,640,000/41,639,728
6. Step 6: Final answer
   x = 195,517,812.52