Finding the Third Proportional to 19,188 and 30,430

Step by Step Solution

1. Step 1: Write the proportion equation
   19,188 : 30,430 = 30,430 : x
2. Step 2: Convert to fraction form
   19,188/30,430 = 30,430/x
3. Step 3: Cross multiply
   19,188x = 30,430 × 30,430
4. Step 4: Simplify right side
   19,188x = 925,984,900
5. Step 5: Solve for x
   x = 925,984,900/19,188
6. Step 6: Final answer
   x = 48,258.54