Finding the Third Proportional to 39,621.38 and 81,064.63

Step by Step Solution

1. Step 1: Write the proportion equation
   39,621.38 : 81,064.63 = 81,064.63 : x
2. Step 2: Convert to fraction form
   39,621.38/81,064.63 = 81,064.63/x
3. Step 3: Cross multiply
   39,621.38x = 81,064.63 × 81,064.63
4. Step 4: Simplify right side
   39,621.38x = 6,571,473,426.39
5. Step 5: Solve for x
   x = 6,571,473,426.39/39,621.38
6. Step 6: Final answer
   x = 165,856.77