Finding the Third Proportional to 39,976.88 and 86,356.13

Step by Step Solution

1. Step 1: Write the proportion equation
   39,976.88 : 86,356.13 = 86,356.13 : x
2. Step 2: Convert to fraction form
   39,976.88/86,356.13 = 86,356.13/x
3. Step 3: Cross multiply
   39,976.88x = 86,356.13 × 86,356.13
4. Step 4: Simplify right side
   39,976.88x = 7,457,380,325.02
5. Step 5: Solve for x
   x = 7,457,380,325.02/39,976.88
6. Step 6: Final answer
   x = 186,542.35