Finding the Third Proportional to 49,344.19 and 66,665.53

Step by Step Solution

1. Step 1: Write the proportion equation
   49,344.19 : 66,665.53 = 66,665.53 : x
2. Step 2: Convert to fraction form
   49,344.19/66,665.53 = 66,665.53/x
3. Step 3: Cross multiply
   49,344.19x = 66,665.53 × 66,665.53
4. Step 4: Simplify right side
   49,344.19x = 4,444,293,056.84
5. Step 5: Solve for x
   x = 4,444,293,056.84/49,344.19
6. Step 6: Final answer
   x = 90,067.21