Finding the Third Proportional to 12,126.38 and 25,720.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,126.38 : 25,720.88 = 25,720.88 : x
2. Step 2: Convert to fraction form
   12,126.38/25,720.88 = 25,720.88/x
3. Step 3: Cross multiply
   12,126.38x = 25,720.88 × 25,720.88
4. Step 4: Simplify right side
   12,126.38x = 661,563,410.77
5. Step 5: Solve for x
   x = 661,563,410.77/12,126.38
6. Step 6: Final answer
   x = 54,555.74