Finding the Third Proportional to 2,128,416 and 3,130,380

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128,416 : 3,130,380 = 3,130,380 : x
2. Step 2: Convert to fraction form
   2,128,416/3,130,380 = 3,130,380/x
3. Step 3: Cross multiply
   2,128,416x = 3,130,380 × 3,130,380
4. Step 4: Simplify right side
   2,128,416x = 9,799,278,944,400
5. Step 5: Solve for x
   x = 9,799,278,944,400/2,128,416
6. Step 6: Final answer
   x = 4,604,024.28