Finding the Third Proportional to 39,453.75 and 53,156.25

Step by Step Solution

1. Step 1: Write the proportion equation
   39,453.75 : 53,156.25 = 53,156.25 : x
2. Step 2: Convert to fraction form
   39,453.75/53,156.25 = 53,156.25/x
3. Step 3: Cross multiply
   39,453.75x = 53,156.25 × 53,156.25
4. Step 4: Simplify right side
   39,453.75x = 2,825,586,914.06
5. Step 5: Solve for x
   x = 2,825,586,914.06/39,453.75
6. Step 6: Final answer
   x = 71,617.70