Finding the Third Proportional to 39,440.25 and 84,415.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,440.25 : 84,415.50 = 84,415.50 : x
2. Step 2: Convert to fraction form
   39,440.25/84,415.50 = 84,415.50/x
3. Step 3: Cross multiply
   39,440.25x = 84,415.50 × 84,415.50
4. Step 4: Simplify right side
   39,440.25x = 7,125,976,640.25
5. Step 5: Solve for x
   x = 7,125,976,640.25/39,440.25
6. Step 6: Final answer
   x = 180,677.78