Finding the Third Proportional to 2,179,914 and 5,091,639

Step by Step Solution

1. Step 1: Write the proportion equation
   2,179,914 : 5,091,639 = 5,091,639 : x
2. Step 2: Convert to fraction form
   2,179,914/5,091,639 = 5,091,639/x
3. Step 3: Cross multiply
   2,179,914x = 5,091,639 × 5,091,639
4. Step 4: Simplify right side
   2,179,914x = 25,924,787,706,321
5. Step 5: Solve for x
   x = 25,924,787,706,321/2,179,914
6. Step 6: Final answer
   x = 11,892,573.61