Finding the Third Proportional to 10,642,680 and 16,442,760

Step by Step Solution

1. Step 1: Write the proportion equation
   10,642,680 : 16,442,760 = 16,442,760 : x
2. Step 2: Convert to fraction form
   10,642,680/16,442,760 = 16,442,760/x
3. Step 3: Cross multiply
   10,642,680x = 16,442,760 × 16,442,760
4. Step 4: Simplify right side
   10,642,680x = 270,364,356,417,600
5. Step 5: Solve for x
   x = 270,364,356,417,600/10,642,680
6. Step 6: Final answer
   x = 25,403,785.18