Finding the Third Proportional to 1,915,509 and 4,190,010

Step by Step Solution

1. Step 1: Write the proportion equation
   1,915,509 : 4,190,010 = 4,190,010 : x
2. Step 2: Convert to fraction form
   1,915,509/4,190,010 = 4,190,010/x
3. Step 3: Cross multiply
   1,915,509x = 4,190,010 × 4,190,010
4. Step 4: Simplify right side
   1,915,509x = 17,556,183,800,100
5. Step 5: Solve for x
   x = 17,556,183,800,100/1,915,509
6. Step 6: Final answer
   x = 9,165,283.90