Finding the Third Proportional to 39,787.50 and 53,845.25

Step by Step Solution

1. Step 1: Write the proportion equation
   39,787.50 : 53,845.25 = 53,845.25 : x
2. Step 2: Convert to fraction form
   39,787.50/53,845.25 = 53,845.25/x
3. Step 3: Cross multiply
   39,787.50x = 53,845.25 × 53,845.25
4. Step 4: Simplify right side
   39,787.50x = 2,899,310,947.56
5. Step 5: Solve for x
   x = 2,899,310,947.56/39,787.50
6. Step 6: Final answer
   x = 72,869.90