Finding the Third Proportional to 19,510,992 and 42,018,720

Step by Step Solution

1. Step 1: Write the proportion equation
   19,510,992 : 42,018,720 = 42,018,720 : x
2. Step 2: Convert to fraction form
   19,510,992/42,018,720 = 42,018,720/x
3. Step 3: Cross multiply
   19,510,992x = 42,018,720 × 42,018,720
4. Step 4: Simplify right side
   19,510,992x = 1,765,572,830,438,400
5. Step 5: Solve for x
   x = 1,765,572,830,438,400/19,510,992
6. Step 6: Final answer
   x = 90,491,187.25