Finding the Third Proportional to 19,716 and 42,196

Step by Step Solution

1. Step 1: Write the proportion equation
   19,716 : 42,196 = 42,196 : x
2. Step 2: Convert to fraction form
   19,716/42,196 = 42,196/x
3. Step 3: Cross multiply
   19,716x = 42,196 × 42,196
4. Step 4: Simplify right side
   19,716x = 1,780,502,416
5. Step 5: Solve for x
   x = 1,780,502,416/19,716
6. Step 6: Final answer
   x = 90,307.49