Finding the Third Proportional to 19,560 and 38,140

Step by Step Solution

1. Step 1: Write the proportion equation
   19,560 : 38,140 = 38,140 : x
2. Step 2: Convert to fraction form
   19,560/38,140 = 38,140/x
3. Step 3: Cross multiply
   19,560x = 38,140 × 38,140
4. Step 4: Simplify right side
   19,560x = 1,454,659,600
5. Step 5: Solve for x
   x = 1,454,659,600/19,560
6. Step 6: Final answer
   x = 74,369.10