Finding the Third Proportional to 1,478,391 and 3,177,636

Step by Step Solution

1. Step 1: Write the proportion equation
   1,478,391 : 3,177,636 = 3,177,636 : x
2. Step 2: Convert to fraction form
   1,478,391/3,177,636 = 3,177,636/x
3. Step 3: Cross multiply
   1,478,391x = 3,177,636 × 3,177,636
4. Step 4: Simplify right side
   1,478,391x = 10,097,370,548,496
5. Step 5: Solve for x
   x = 10,097,370,548,496/1,478,391
6. Step 6: Final answer
   x = 6,829,972.96