Finding the Third Proportional to 1,636,905 and 3,571,161

Step by Step Solution

1. Step 1: Write the proportion equation
   1,636,905 : 3,571,161 = 3,571,161 : x
2. Step 2: Convert to fraction form
   1,636,905/3,571,161 = 3,571,161/x
3. Step 3: Cross multiply
   1,636,905x = 3,571,161 × 3,571,161
4. Step 4: Simplify right side
   1,636,905x = 12,753,190,887,921
5. Step 5: Solve for x
   x = 12,753,190,887,921/1,636,905
6. Step 6: Final answer
   x = 7,791,039.12