Finding the Third Proportional to 19,939,682 and 42,642,760

Step by Step Solution

1. Step 1: Write the proportion equation
   19,939,682 : 42,642,760 = 42,642,760 : x
2. Step 2: Convert to fraction form
   19,939,682/42,642,760 = 42,642,760/x
3. Step 3: Cross multiply
   19,939,682x = 42,642,760 × 42,642,760
4. Step 4: Simplify right side
   19,939,682x = 1,818,404,980,417,600
5. Step 5: Solve for x
   x = 1,818,404,980,417,600/19,939,682
6. Step 6: Final answer
   x = 91,195,284.88