Finding the Third Proportional to 2,602,395 and 5,639,166

Step by Step Solution

1. Step 1: Write the proportion equation
   2,602,395 : 5,639,166 = 5,639,166 : x
2. Step 2: Convert to fraction form
   2,602,395/5,639,166 = 5,639,166/x
3. Step 3: Cross multiply
   2,602,395x = 5,639,166 × 5,639,166
4. Step 4: Simplify right side
   2,602,395x = 31,800,193,175,556
5. Step 5: Solve for x
   x = 31,800,193,175,556/2,602,395
6. Step 6: Final answer
   x = 12,219,587.41