Finding the Third Proportional to 2,599,685 and 5,610,403

Step by Step Solution

1. Step 1: Write the proportion equation
   2,599,685 : 5,610,403 = 5,610,403 : x
2. Step 2: Convert to fraction form
   2,599,685/5,610,403 = 5,610,403/x
3. Step 3: Cross multiply
   2,599,685x = 5,610,403 × 5,610,403
4. Step 4: Simplify right side
   2,599,685x = 31,476,621,822,409
5. Step 5: Solve for x
   x = 31,476,621,822,409/2,599,685
6. Step 6: Final answer
   x = 12,107,859.92