Finding the Third Proportional to 2,645,840 and 5,609,608

Step by Step Solution

1. Step 1: Write the proportion equation
   2,645,840 : 5,609,608 = 5,609,608 : x
2. Step 2: Convert to fraction form
   2,645,840/5,609,608 = 5,609,608/x
3. Step 3: Cross multiply
   2,645,840x = 5,609,608 × 5,609,608
4. Step 4: Simplify right side
   2,645,840x = 31,467,701,913,664
5. Step 5: Solve for x
   x = 31,467,701,913,664/2,645,840
6. Step 6: Final answer
   x = 11,893,274.69