Finding the Third Proportional to 12,256.31 and 28,374.05

Step by Step Solution

1. Step 1: Write the proportion equation
   12,256.31 : 28,374.05 = 28,374.05 : x
2. Step 2: Convert to fraction form
   12,256.31/28,374.05 = 28,374.05/x
3. Step 3: Cross multiply
   12,256.31x = 28,374.05 × 28,374.05
4. Step 4: Simplify right side
   12,256.31x = 805,086,536.06
5. Step 5: Solve for x
   x = 805,086,536.06/12,256.31
6. Step 6: Final answer
   x = 65,687.50