Finding the Third Proportional to 248,019.75 and 371,065.50

Step by Step Solution

1. Step 1: Write the proportion equation
   248,019.75 : 371,065.50 = 371,065.50 : x
2. Step 2: Convert to fraction form
   248,019.75/371,065.50 = 371,065.50/x
3. Step 3: Cross multiply
   248,019.75x = 371,065.50 × 371,065.50
4. Step 4: Simplify right side
   248,019.75x = 137,689,605,290.25
5. Step 5: Solve for x
   x = 137,689,605,290.25/248,019.75
6. Step 6: Final answer
   x = 555,155.81