Finding the Third Proportional to 20,358,660 and 42,134,418

Step by Step Solution

1. Step 1: Write the proportion equation
   20,358,660 : 42,134,418 = 42,134,418 : x
2. Step 2: Convert to fraction form
   20,358,660/42,134,418 = 42,134,418/x
3. Step 3: Cross multiply
   20,358,660x = 42,134,418 × 42,134,418
4. Step 4: Simplify right side
   20,358,660x = 1,775,309,180,198,724
5. Step 5: Solve for x
   x = 1,775,309,180,198,724/20,358,660
6. Step 6: Final answer
   x = 87,201,671.44