Finding the Third Proportional to 19,199.63 and 39,355.88

Step by Step Solution

1. Step 1: Write the proportion equation
   19,199.63 : 39,355.88 = 39,355.88 : x
2. Step 2: Convert to fraction form
   19,199.63/39,355.88 = 39,355.88/x
3. Step 3: Cross multiply
   19,199.63x = 39,355.88 × 39,355.88
4. Step 4: Simplify right side
   19,199.63x = 1,548,884,897.02
5. Step 5: Solve for x
   x = 1,548,884,897.02/19,199.63
6. Step 6: Final answer
   x = 80,672.66