Finding the Third Proportional to 2,154,906 and 4,688,154

Step by Step Solution

1. Step 1: Write the proportion equation
   2,154,906 : 4,688,154 = 4,688,154 : x
2. Step 2: Convert to fraction form
   2,154,906/4,688,154 = 4,688,154/x
3. Step 3: Cross multiply
   2,154,906x = 4,688,154 × 4,688,154
4. Step 4: Simplify right side
   2,154,906x = 21,978,787,927,716
5. Step 5: Solve for x
   x = 21,978,787,927,716/2,154,906
6. Step 6: Final answer
   x = 10,199,418.41