Finding the Third Proportional to 39,210.75 and 85,765.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,210.75 : 85,765.50 = 85,765.50 : x
2. Step 2: Convert to fraction form
   39,210.75/85,765.50 = 85,765.50/x
3. Step 3: Cross multiply
   39,210.75x = 85,765.50 × 85,765.50
4. Step 4: Simplify right side
   39,210.75x = 7,355,720,990.25
5. Step 5: Solve for x
   x = 7,355,720,990.25/39,210.75
6. Step 6: Final answer
   x = 187,594.50