Finding the Third Proportional to 39,754 and 55,720.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,754 : 55,720.50 = 55,720.50 : x
2. Step 2: Convert to fraction form
   39,754/55,720.50 = 55,720.50/x
3. Step 3: Cross multiply
   39,754x = 55,720.50 × 55,720.50
4. Step 4: Simplify right side
   39,754x = 3,104,774,120.25
5. Step 5: Solve for x
   x = 3,104,774,120.25/39,754
6. Step 6: Final answer
   x = 78,099.67