Finding the Third Proportional to 12,538,640 and 19,132,256

Step by Step Solution

1. Step 1: Write the proportion equation
   12,538,640 : 19,132,256 = 19,132,256 : x
2. Step 2: Convert to fraction form
   12,538,640/19,132,256 = 19,132,256/x
3. Step 3: Cross multiply
   12,538,640x = 19,132,256 × 19,132,256
4. Step 4: Simplify right side
   12,538,640x = 366,043,219,649,536
5. Step 5: Solve for x
   x = 366,043,219,649,536/12,538,640
6. Step 6: Final answer
   x = 29,193,215.50