Finding the Third Proportional to 42,624.56 and 66,864.23

Step by Step Solution

1. Step 1: Write the proportion equation
   42,624.56 : 66,864.23 = 66,864.23 : x
2. Step 2: Convert to fraction form
   42,624.56/66,864.23 = 66,864.23/x
3. Step 3: Cross multiply
   42,624.56x = 66,864.23 × 66,864.23
4. Step 4: Simplify right side
   42,624.56x = 4,470,825,838.55
5. Step 5: Solve for x
   x = 4,470,825,838.55/42,624.56
6. Step 6: Final answer
   x = 104,888.49