Finding the Third Proportional to 2,581,636 and 5,611,040

Step by Step Solution

1. Step 1: Write the proportion equation
   2,581,636 : 5,611,040 = 5,611,040 : x
2. Step 2: Convert to fraction form
   2,581,636/5,611,040 = 5,611,040/x
3. Step 3: Cross multiply
   2,581,636x = 5,611,040 × 5,611,040
4. Step 4: Simplify right side
   2,581,636x = 31,483,769,881,600
5. Step 5: Solve for x
   x = 31,483,769,881,600/2,581,636
6. Step 6: Final answer
   x = 12,195,278.45