Finding the Third Proportional to 81,810 and 109,937.25

Step by Step Solution

1. Step 1: Write the proportion equation
   81,810 : 109,937.25 = 109,937.25 : x
2. Step 2: Convert to fraction form
   81,810/109,937.25 = 109,937.25/x
3. Step 3: Cross multiply
   81,810x = 109,937.25 × 109,937.25
4. Step 4: Simplify right side
   81,810x = 12,086,198,937.56
5. Step 5: Solve for x
   x = 12,086,198,937.56/81,810
6. Step 6: Final answer
   x = 147,734.98