Finding the Third Proportional to 19,720.88 and 42,448.88

Step by Step Solution

1. Step 1: Write the proportion equation
   19,720.88 : 42,448.88 = 42,448.88 : x
2. Step 2: Convert to fraction form
   19,720.88/42,448.88 = 42,448.88/x
3. Step 3: Cross multiply
   19,720.88x = 42,448.88 × 42,448.88
4. Step 4: Simplify right side
   19,720.88x = 1,801,906,988.77
5. Step 5: Solve for x
   x = 1,801,906,988.77/19,720.88
6. Step 6: Final answer
   x = 91,370.54