Finding the Third Proportional to 19,470 and 42,357

Step by Step Solution

1. Step 1: Write the proportion equation
   19,470 : 42,357 = 42,357 : x
2. Step 2: Convert to fraction form
   19,470/42,357 = 42,357/x
3. Step 3: Cross multiply
   19,470x = 42,357 × 42,357
4. Step 4: Simplify right side
   19,470x = 1,794,115,449
5. Step 5: Solve for x
   x = 1,794,115,449/19,470
6. Step 6: Final answer
   x = 92,147.69