Finding the Third Proportional to 1,680,928 and 3,887,392

Step by Step Solution

1. Step 1: Write the proportion equation
   1,680,928 : 3,887,392 = 3,887,392 : x
2. Step 2: Convert to fraction form
   1,680,928/3,887,392 = 3,887,392/x
3. Step 3: Cross multiply
   1,680,928x = 3,887,392 × 3,887,392
4. Step 4: Simplify right side
   1,680,928x = 15,111,816,561,664
5. Step 5: Solve for x
   x = 15,111,816,561,664/1,680,928
6. Step 6: Final answer
   x = 8,990,162.91