Finding the Third Proportional to 38,307.94 and 81,223.31

Step by Step Solution

1. Step 1: Write the proportion equation
   38,307.94 : 81,223.31 = 81,223.31 : x
2. Step 2: Convert to fraction form
   38,307.94/81,223.31 = 81,223.31/x
3. Step 3: Cross multiply
   38,307.94x = 81,223.31 × 81,223.31
4. Step 4: Simplify right side
   38,307.94x = 6,597,226,493.47
5. Step 5: Solve for x
   x = 6,597,226,493.47/38,307.94
6. Step 6: Final answer
   x = 172,215.65