Finding the Third Proportional to 3,212,940 and 4,283,442

Step by Step Solution

1. Step 1: Write the proportion equation
   3,212,940 : 4,283,442 = 4,283,442 : x
2. Step 2: Convert to fraction form
   3,212,940/4,283,442 = 4,283,442/x
3. Step 3: Cross multiply
   3,212,940x = 4,283,442 × 4,283,442
4. Step 4: Simplify right side
   3,212,940x = 18,347,875,367,364
5. Step 5: Solve for x
   x = 18,347,875,367,364/3,212,940
6. Step 6: Final answer
   x = 5,710,618.74