Finding the Third Proportional to 76,221 and 101,821.50

Step by Step Solution

1. Step 1: Write the proportion equation
   76,221 : 101,821.50 = 101,821.50 : x
2. Step 2: Convert to fraction form
   76,221/101,821.50 = 101,821.50/x
3. Step 3: Cross multiply
   76,221x = 101,821.50 × 101,821.50
4. Step 4: Simplify right side
   76,221x = 10,367,617,862.25
5. Step 5: Solve for x
   x = 10,367,617,862.25/76,221
6. Step 6: Final answer
   x = 136,020.49