Finding the Third Proportional to 1,222,216 and 2,631,664

Step by Step Solution

1. Step 1: Write the proportion equation
   1,222,216 : 2,631,664 = 2,631,664 : x
2. Step 2: Convert to fraction form
   1,222,216/2,631,664 = 2,631,664/x
3. Step 3: Cross multiply
   1,222,216x = 2,631,664 × 2,631,664
4. Step 4: Simplify right side
   1,222,216x = 6,925,655,408,896
5. Step 5: Solve for x
   x = 6,925,655,408,896/1,222,216
6. Step 6: Final answer
   x = 5,666,474.18