Finding the Third Proportional to 2,179,278 and 4,788,396

Step by Step Solution

1. Step 1: Write the proportion equation
   2,179,278 : 4,788,396 = 4,788,396 : x
2. Step 2: Convert to fraction form
   2,179,278/4,788,396 = 4,788,396/x
3. Step 3: Cross multiply
   2,179,278x = 4,788,396 × 4,788,396
4. Step 4: Simplify right side
   2,179,278x = 22,928,736,252,816
5. Step 5: Solve for x
   x = 22,928,736,252,816/2,179,278
6. Step 6: Final answer
   x = 10,521,253.49