Finding the Third Proportional to 1,992,420 and 4,403,492

Step by Step Solution

1. Step 1: Write the proportion equation
   1,992,420 : 4,403,492 = 4,403,492 : x
2. Step 2: Convert to fraction form
   1,992,420/4,403,492 = 4,403,492/x
3. Step 3: Cross multiply
   1,992,420x = 4,403,492 × 4,403,492
4. Step 4: Simplify right side
   1,992,420x = 19,390,741,794,064
5. Step 5: Solve for x
   x = 19,390,741,794,064/1,992,420
6. Step 6: Final answer
   x = 9,732,256.15