Finding the Third Proportional to 3,485,677 and 5,280,680

Step by Step Solution

1. Step 1: Write the proportion equation
   3,485,677 : 5,280,680 = 5,280,680 : x
2. Step 2: Convert to fraction form
   3,485,677/5,280,680 = 5,280,680/x
3. Step 3: Cross multiply
   3,485,677x = 5,280,680 × 5,280,680
4. Step 4: Simplify right side
   3,485,677x = 27,885,581,262,400
5. Step 5: Solve for x
   x = 27,885,581,262,400/3,485,677
6. Step 6: Final answer
   x = 8,000,047.41