Finding the Third Proportional to 42,653.25 and 66,904.31

Step by Step Solution

1. Step 1: Write the proportion equation
   42,653.25 : 66,904.31 = 66,904.31 : x
2. Step 2: Convert to fraction form
   42,653.25/66,904.31 = 66,904.31/x
3. Step 3: Cross multiply
   42,653.25x = 66,904.31 × 66,904.31
4. Step 4: Simplify right side
   42,653.25x = 4,476,187,031.10
5. Step 5: Solve for x
   x = 4,476,187,031.10/42,653.25
6. Step 6: Final answer
   x = 104,943.63