Finding the Third Proportional to 67,824.21 and 99,776.18

Step by Step Solution

1. Step 1: Write the proportion equation
   67,824.21 : 99,776.18 = 99,776.18 : x
2. Step 2: Convert to fraction form
   67,824.21/99,776.18 = 99,776.18/x
3. Step 3: Cross multiply
   67,824.21x = 99,776.18 × 99,776.18
4. Step 4: Simplify right side
   67,824.21x = 9,955,286,033.03
5. Step 5: Solve for x
   x = 9,955,286,033.03/67,824.21
6. Step 6: Final answer
   x = 146,780.71