Finding the Third Proportional to 12,315.38 and 26,478.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,315.38 : 26,478.56 = 26,478.56 : x
2. Step 2: Convert to fraction form
   12,315.38/26,478.56 = 26,478.56/x
3. Step 3: Cross multiply
   12,315.38x = 26,478.56 × 26,478.56
4. Step 4: Simplify right side
   12,315.38x = 701,114,272.07
5. Step 5: Solve for x
   x = 701,114,272.07/12,315.38
6. Step 6: Final answer
   x = 56,930.00