Finding the Third Proportional to 2,145,938 and 4,640,344

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145,938 : 4,640,344 = 4,640,344 : x
2. Step 2: Convert to fraction form
   2,145,938/4,640,344 = 4,640,344/x
3. Step 3: Cross multiply
   2,145,938x = 4,640,344 × 4,640,344
4. Step 4: Simplify right side
   2,145,938x = 21,532,792,438,336
5. Step 5: Solve for x
   x = 21,532,792,438,336/2,145,938
6. Step 6: Final answer
   x = 10,034,209.95