Finding the Third Proportional to 4,450,290 and 9,136,500

Step by Step Solution

1. Step 1: Write the proportion equation
   4,450,290 : 9,136,500 = 9,136,500 : x
2. Step 2: Convert to fraction form
   4,450,290/9,136,500 = 9,136,500/x
3. Step 3: Cross multiply
   4,450,290x = 9,136,500 × 9,136,500
4. Step 4: Simplify right side
   4,450,290x = 83,475,632,250,000
5. Step 5: Solve for x
   x = 83,475,632,250,000/4,450,290
6. Step 6: Final answer
   x = 18,757,346.66