Finding the Third Proportional to 2,100,540 and 4,499,970

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100,540 : 4,499,970 = 4,499,970 : x
2. Step 2: Convert to fraction form
   2,100,540/4,499,970 = 4,499,970/x
3. Step 3: Cross multiply
   2,100,540x = 4,499,970 × 4,499,970
4. Step 4: Simplify right side
   2,100,540x = 20,249,730,000,900
5. Step 5: Solve for x
   x = 20,249,730,000,900/2,100,540
6. Step 6: Final answer
   x = 9,640,249.65