Finding the Third Proportional to 19,486 and 42,251

Step by Step Solution

1. Step 1: Write the proportion equation
   19,486 : 42,251 = 42,251 : x
2. Step 2: Convert to fraction form
   19,486/42,251 = 42,251/x
3. Step 3: Cross multiply
   19,486x = 42,251 × 42,251
4. Step 4: Simplify right side
   19,486x = 1,785,147,001
5. Step 5: Solve for x
   x = 1,785,147,001/19,486
6. Step 6: Final answer
   x = 91,611.77