Finding the Third Proportional to 19,890.56 and 42,894.56

Step by Step Solution

1. Step 1: Write the proportion equation
   19,890.56 : 42,894.56 = 42,894.56 : x
2. Step 2: Convert to fraction form
   19,890.56/42,894.56 = 42,894.56/x
3. Step 3: Cross multiply
   19,890.56x = 42,894.56 × 42,894.56
4. Step 4: Simplify right side
   19,890.56x = 1,839,943,492.07
5. Step 5: Solve for x
   x = 1,839,943,492.07/19,890.56
6. Step 6: Final answer
   x = 92,503.34