Finding the Third Proportional to 12,888 and 30,132

Step by Step Solution

1. Step 1: Write the proportion equation
   12,888 : 30,132 = 30,132 : x
2. Step 2: Convert to fraction form
   12,888/30,132 = 30,132/x
3. Step 3: Cross multiply
   12,888x = 30,132 × 30,132
4. Step 4: Simplify right side
   12,888x = 907,937,424
5. Step 5: Solve for x
   x = 907,937,424/12,888
6. Step 6: Final answer
   x = 70,448.28