Finding the Third Proportional to 20,042,243 and 42,918,834

Step by Step Solution

1. Step 1: Write the proportion equation
   20,042,243 : 42,918,834 = 42,918,834 : x
2. Step 2: Convert to fraction form
   20,042,243/42,918,834 = 42,918,834/x
3. Step 3: Cross multiply
   20,042,243x = 42,918,834 × 42,918,834
4. Step 4: Simplify right side
   20,042,243x = 1,842,026,311,919,556
5. Step 5: Solve for x
   x = 1,842,026,311,919,556/20,042,243
6. Step 6: Final answer
   x = 91,907,193.82