Finding the Third Proportional to 2,166,651 and 4,680,216

Step by Step Solution

1. Step 1: Write the proportion equation
   2,166,651 : 4,680,216 = 4,680,216 : x
2. Step 2: Convert to fraction form
   2,166,651/4,680,216 = 4,680,216/x
3. Step 3: Cross multiply
   2,166,651x = 4,680,216 × 4,680,216
4. Step 4: Simplify right side
   2,166,651x = 21,904,421,806,656
5. Step 5: Solve for x
   x = 21,904,421,806,656/2,166,651
6. Step 6: Final answer
   x = 10,109,806.24