Finding the Third Proportional to 4,992,456 and 10,780,432

Step by Step Solution

1. Step 1: Write the proportion equation
   4,992,456 : 10,780,432 = 10,780,432 : x
2. Step 2: Convert to fraction form
   4,992,456/10,780,432 = 10,780,432/x
3. Step 3: Cross multiply
   4,992,456x = 10,780,432 × 10,780,432
4. Step 4: Simplify right side
   4,992,456x = 116,217,714,106,624
5. Step 5: Solve for x
   x = 116,217,714,106,624/4,992,456
6. Step 6: Final answer
   x = 23,278,665.67