Finding the Third Proportional to 21,615.19 and 50,486.63

Step by Step Solution

1. Step 1: Write the proportion equation
   21,615.19 : 50,486.63 = 50,486.63 : x
2. Step 2: Convert to fraction form
   21,615.19/50,486.63 = 50,486.63/x
3. Step 3: Cross multiply
   21,615.19x = 50,486.63 × 50,486.63
4. Step 4: Simplify right side
   21,615.19x = 2,548,899,303.89
5. Step 5: Solve for x
   x = 2,548,899,303.89/21,615.19
6. Step 6: Final answer
   x = 117,921.68