Finding the Third Proportional to 1,990,135 and 4,352,600

Step by Step Solution

1. Step 1: Write the proportion equation
   1,990,135 : 4,352,600 = 4,352,600 : x
2. Step 2: Convert to fraction form
   1,990,135/4,352,600 = 4,352,600/x
3. Step 3: Cross multiply
   1,990,135x = 4,352,600 × 4,352,600
4. Step 4: Simplify right side
   1,990,135x = 18,945,126,760,000
5. Step 5: Solve for x
   x = 18,945,126,760,000/1,990,135
6. Step 6: Final answer
   x = 9,519,518.40