Finding the Third Proportional to 1,354,390 and 2,820,880

Step by Step Solution

1. Step 1: Write the proportion equation
   1,354,390 : 2,820,880 = 2,820,880 : x
2. Step 2: Convert to fraction form
   1,354,390/2,820,880 = 2,820,880/x
3. Step 3: Cross multiply
   1,354,390x = 2,820,880 × 2,820,880
4. Step 4: Simplify right side
   1,354,390x = 7,957,363,974,400
5. Step 5: Solve for x
   x = 7,957,363,974,400/1,354,390
6. Step 6: Final answer
   x = 5,875,238.28