Finding the Third Proportional to 2,558,173 and 5,503,436

Step by Step Solution

1. Step 1: Write the proportion equation
   2,558,173 : 5,503,436 = 5,503,436 : x
2. Step 2: Convert to fraction form
   2,558,173/5,503,436 = 5,503,436/x
3. Step 3: Cross multiply
   2,558,173x = 5,503,436 × 5,503,436
4. Step 4: Simplify right side
   2,558,173x = 30,287,807,806,096
5. Step 5: Solve for x
   x = 30,287,807,806,096/2,558,173
6. Step 6: Final answer
   x = 11,839,624.53