Finding the Third Proportional to 38,631.94 and 81,415.13

Step by Step Solution

1. Step 1: Write the proportion equation
   38,631.94 : 81,415.13 = 81,415.13 : x
2. Step 2: Convert to fraction form
   38,631.94/81,415.13 = 81,415.13/x
3. Step 3: Cross multiply
   38,631.94x = 81,415.13 × 81,415.13
4. Step 4: Simplify right side
   38,631.94x = 6,628,422,578.77
5. Step 5: Solve for x
   x = 6,628,422,578.77/38,631.94
6. Step 6: Final answer
   x = 171,578.83