Finding the Third Proportional to 2,581,643 and 5,611,054

Step by Step Solution

1. Step 1: Write the proportion equation
   2,581,643 : 5,611,054 = 5,611,054 : x
2. Step 2: Convert to fraction form
   2,581,643/5,611,054 = 5,611,054/x
3. Step 3: Cross multiply
   2,581,643x = 5,611,054 × 5,611,054
4. Step 4: Simplify right side
   2,581,643x = 31,483,926,990,916
5. Step 5: Solve for x
   x = 31,483,926,990,916/2,581,643
6. Step 6: Final answer
   x = 12,195,306.24