Finding the Third Proportional to 1,989,858 and 4,263,594

Step by Step Solution

1. Step 1: Write the proportion equation
   1,989,858 : 4,263,594 = 4,263,594 : x
2. Step 2: Convert to fraction form
   1,989,858/4,263,594 = 4,263,594/x
3. Step 3: Cross multiply
   1,989,858x = 4,263,594 × 4,263,594
4. Step 4: Simplify right side
   1,989,858x = 18,178,233,796,836
5. Step 5: Solve for x
   x = 18,178,233,796,836/1,989,858
6. Step 6: Final answer
   x = 9,135,442.73