Finding the Third Proportional to 68,385 and 103,521

Step by Step Solution

1. Step 1: Write the proportion equation
   68,385 : 103,521 = 103,521 : x
2. Step 2: Convert to fraction form
   68,385/103,521 = 103,521/x
3. Step 3: Cross multiply
   68,385x = 103,521 × 103,521
4. Step 4: Simplify right side
   68,385x = 10,716,597,441
5. Step 5: Solve for x
   x = 10,716,597,441/68,385
6. Step 6: Final answer
   x = 156,709.77