Finding the Third Proportional to 19,618,841 and 42,236,039

Step by Step Solution

1. Step 1: Write the proportion equation
   19,618,841 : 42,236,039 = 42,236,039 : x
2. Step 2: Convert to fraction form
   19,618,841/42,236,039 = 42,236,039/x
3. Step 3: Cross multiply
   19,618,841x = 42,236,039 × 42,236,039
4. Step 4: Simplify right side
   19,618,841x = 1,783,882,990,409,521
5. Step 5: Solve for x
   x = 1,783,882,990,409,521/19,618,841
6. Step 6: Final answer
   x = 90,927,032.36