Finding the Third Proportional to 1,989,641 and 4,262,943

Step by Step Solution

1. Step 1: Write the proportion equation
   1,989,641 : 4,262,943 = 4,262,943 : x
2. Step 2: Convert to fraction form
   1,989,641/4,262,943 = 4,262,943/x
3. Step 3: Cross multiply
   1,989,641x = 4,262,943 × 4,262,943
4. Step 4: Simplify right side
   1,989,641x = 18,172,683,021,249
5. Step 5: Solve for x
   x = 18,172,683,021,249/1,989,641
6. Step 6: Final answer
   x = 9,133,649.25