Finding the Third Proportional to 67,939.88 and 99,911.81

Step by Step Solution

1. Step 1: Write the proportion equation
   67,939.88 : 99,911.81 = 99,911.81 : x
2. Step 2: Convert to fraction form
   67,939.88/99,911.81 = 99,911.81/x
3. Step 3: Cross multiply
   67,939.88x = 99,911.81 × 99,911.81
4. Step 4: Simplify right side
   67,939.88x = 9,982,370,277.04
5. Step 5: Solve for x
   x = 9,982,370,277.04/67,939.88
6. Step 6: Final answer
   x = 146,929.48