Finding the Third Proportional to 30,402 and 63,216

Step by Step Solution

1. Step 1: Write the proportion equation
   30,402 : 63,216 = 63,216 : x
2. Step 2: Convert to fraction form
   30,402/63,216 = 63,216/x
3. Step 3: Cross multiply
   30,402x = 63,216 × 63,216
4. Step 4: Simplify right side
   30,402x = 3,996,262,656
5. Step 5: Solve for x
   x = 3,996,262,656/30,402
6. Step 6: Final answer
   x = 131,447.36