Finding the Third Proportional to 2,111,688 and 4,622,472

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111,688 : 4,622,472 = 4,622,472 : x
2. Step 2: Convert to fraction form
   2,111,688/4,622,472 = 4,622,472/x
3. Step 3: Cross multiply
   2,111,688x = 4,622,472 × 4,622,472
4. Step 4: Simplify right side
   2,111,688x = 21,367,247,390,784
5. Step 5: Solve for x
   x = 21,367,247,390,784/2,111,688
6. Step 6: Final answer
   x = 10,118,562.68