Finding the Third Proportional to 49,905 and 72,910.50

Step by Step Solution

1. Step 1: Write the proportion equation
   49,905 : 72,910.50 = 72,910.50 : x
2. Step 2: Convert to fraction form
   49,905/72,910.50 = 72,910.50/x
3. Step 3: Cross multiply
   49,905x = 72,910.50 × 72,910.50
4. Step 4: Simplify right side
   49,905x = 5,315,941,010.25
5. Step 5: Solve for x
   x = 5,315,941,010.25/49,905
6. Step 6: Final answer
   x = 106,521.21