Finding the Third Proportional to 2,179,909 and 5,091,634

Step by Step Solution

1. Step 1: Write the proportion equation
   2,179,909 : 5,091,634 = 5,091,634 : x
2. Step 2: Convert to fraction form
   2,179,909/5,091,634 = 5,091,634/x
3. Step 3: Cross multiply
   2,179,909x = 5,091,634 × 5,091,634
4. Step 4: Simplify right side
   2,179,909x = 25,924,736,789,956
5. Step 5: Solve for x
   x = 25,924,736,789,956/2,179,909
6. Step 6: Final answer
   x = 11,892,577.53