Finding the Third Proportional to 30,624 and 63,216

Step by Step Solution

1. Step 1: Write the proportion equation
   30,624 : 63,216 = 63,216 : x
2. Step 2: Convert to fraction form
   30,624/63,216 = 63,216/x
3. Step 3: Cross multiply
   30,624x = 63,216 × 63,216
4. Step 4: Simplify right side
   30,624x = 3,996,262,656
5. Step 5: Solve for x
   x = 3,996,262,656/30,624
6. Step 6: Final answer
   x = 130,494.47