Finding the Third Proportional to 12,417.75 and 18,787.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,417.75 : 18,787.50 = 18,787.50 : x
2. Step 2: Convert to fraction form
   12,417.75/18,787.50 = 18,787.50/x
3. Step 3: Cross multiply
   12,417.75x = 18,787.50 × 18,787.50
4. Step 4: Simplify right side
   12,417.75x = 352,970,156.25
5. Step 5: Solve for x
   x = 352,970,156.25/12,417.75
6. Step 6: Final answer
   x = 28,424.65