Finding the Third Proportional to 2,106,688 and 3,178,680

Step by Step Solution

1. Step 1: Write the proportion equation
   2,106,688 : 3,178,680 = 3,178,680 : x
2. Step 2: Convert to fraction form
   2,106,688/3,178,680 = 3,178,680/x
3. Step 3: Cross multiply
   2,106,688x = 3,178,680 × 3,178,680
4. Step 4: Simplify right side
   2,106,688x = 10,104,006,542,400
5. Step 5: Solve for x
   x = 10,104,006,542,400/2,106,688
6. Step 6: Final answer
   x = 4,796,157.07