Finding the Third Proportional to 919,860 and 1,979,616

Step by Step Solution

1. Step 1: Write the proportion equation
   919,860 : 1,979,616 = 1,979,616 : x
2. Step 2: Convert to fraction form
   919,860/1,979,616 = 1,979,616/x
3. Step 3: Cross multiply
   919,860x = 1,979,616 × 1,979,616
4. Step 4: Simplify right side
   919,860x = 3,918,879,507,456
5. Step 5: Solve for x
   x = 3,918,879,507,456/919,860
6. Step 6: Final answer
   x = 4,260,299.95