Finding the Third Proportional to 18,372,128 and 42,911,936

Step by Step Solution

1. Step 1: Write the proportion equation
   18,372,128 : 42,911,936 = 42,911,936 : x
2. Step 2: Convert to fraction form
   18,372,128/42,911,936 = 42,911,936/x
3. Step 3: Cross multiply
   18,372,128x = 42,911,936 × 42,911,936
4. Step 4: Simplify right side
   18,372,128x = 1,841,434,251,268,096
5. Step 5: Solve for x
   x = 1,841,434,251,268,096/18,372,128
6. Step 6: Final answer
   x = 100,229,774.76