Finding the Third Proportional to 39,448.75 and 55,487.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,448.75 : 55,487.50 = 55,487.50 : x
2. Step 2: Convert to fraction form
   39,448.75/55,487.50 = 55,487.50/x
3. Step 3: Cross multiply
   39,448.75x = 55,487.50 × 55,487.50
4. Step 4: Simplify right side
   39,448.75x = 3,078,862,656.25
5. Step 5: Solve for x
   x = 3,078,862,656.25/39,448.75
6. Step 6: Final answer
   x = 78,047.15