Finding the Third Proportional to 19,864 and 42,492

Step by Step Solution

1. Step 1: Write the proportion equation
   19,864 : 42,492 = 42,492 : x
2. Step 2: Convert to fraction form
   19,864/42,492 = 42,492/x
3. Step 3: Cross multiply
   19,864x = 42,492 × 42,492
4. Step 4: Simplify right side
   19,864x = 1,805,570,064
5. Step 5: Solve for x
   x = 1,805,570,064/19,864
6. Step 6: Final answer
   x = 90,896.60