Finding the Third Proportional to 19,726.88 and 42,629.63

Step by Step Solution

1. Step 1: Write the proportion equation
   19,726.88 : 42,629.63 = 42,629.63 : x
2. Step 2: Convert to fraction form
   19,726.88/42,629.63 = 42,629.63/x
3. Step 3: Cross multiply
   19,726.88x = 42,629.63 × 42,629.63
4. Step 4: Simplify right side
   19,726.88x = 1,817,284,927.64
5. Step 5: Solve for x
   x = 1,817,284,927.64/19,726.88
6. Step 6: Final answer
   x = 92,122.29