Finding the Third Proportional to 1,211,910 and 2,636,634

Step by Step Solution

1. Step 1: Write the proportion equation
   1,211,910 : 2,636,634 = 2,636,634 : x
2. Step 2: Convert to fraction form
   1,211,910/2,636,634 = 2,636,634/x
3. Step 3: Cross multiply
   1,211,910x = 2,636,634 × 2,636,634
4. Step 4: Simplify right side
   1,211,910x = 6,951,838,849,956
5. Step 5: Solve for x
   x = 6,951,838,849,956/1,211,910
6. Step 6: Final answer
   x = 5,736,266.60