Finding the Third Proportional to 12,642.75 and 30,506.63

Step by Step Solution

1. Step 1: Write the proportion equation
   12,642.75 : 30,506.63 = 30,506.63 : x
2. Step 2: Convert to fraction form
   12,642.75/30,506.63 = 30,506.63/x
3. Step 3: Cross multiply
   12,642.75x = 30,506.63 × 30,506.63
4. Step 4: Simplify right side
   12,642.75x = 930,654,168.89
5. Step 5: Solve for x
   x = 930,654,168.89/12,642.75
6. Step 6: Final answer
   x = 73,611.69