Finding the Third Proportional to 30,603,642.75 and 64,661,256

Step by Step Solution

1. Step 1: Write the proportion equation
   30,603,642.75 : 64,661,256 = 64,661,256 : x
2. Step 2: Convert to fraction form
   30,603,642.75/64,661,256 = 64,661,256/x
3. Step 3: Cross multiply
   30,603,642.75x = 64,661,256 × 64,661,256
4. Step 4: Simplify right side
   30,603,642.75x = 4,181,078,027,497,536
5. Step 5: Solve for x
   x = 4,181,078,027,497,536/30,603,642.75
6. Step 6: Final answer
   x = 136,620,273.01