Finding the Third Proportional to 5,340,407 and 8,274,484

Step by Step Solution

1. Step 1: Write the proportion equation
   5,340,407 : 8,274,484 = 8,274,484 : x
2. Step 2: Convert to fraction form
   5,340,407/8,274,484 = 8,274,484/x
3. Step 3: Cross multiply
   5,340,407x = 8,274,484 × 8,274,484
4. Step 4: Simplify right side
   5,340,407x = 68,467,085,466,256
5. Step 5: Solve for x
   x = 68,467,085,466,256/5,340,407
6. Step 6: Final answer
   x = 12,820,574.44