Finding the Third Proportional to 2,620,318 and 5,555,560

Step by Step Solution

1. Step 1: Write the proportion equation
   2,620,318 : 5,555,560 = 5,555,560 : x
2. Step 2: Convert to fraction form
   2,620,318/5,555,560 = 5,555,560/x
3. Step 3: Cross multiply
   2,620,318x = 5,555,560 × 5,555,560
4. Step 4: Simplify right side
   2,620,318x = 30,864,246,913,600
5. Step 5: Solve for x
   x = 30,864,246,913,600/2,620,318
6. Step 6: Final answer
   x = 11,778,817.27