Finding the Third Proportional to 19,966.50 and 38,380.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,966.50 : 38,380.50 = 38,380.50 : x
2. Step 2: Convert to fraction form
   19,966.50/38,380.50 = 38,380.50/x
3. Step 3: Cross multiply
   19,966.50x = 38,380.50 × 38,380.50
4. Step 4: Simplify right side
   19,966.50x = 1,473,062,780.25
5. Step 5: Solve for x
   x = 1,473,062,780.25/19,966.50
6. Step 6: Final answer
   x = 73,776.72