Finding the Third Proportional to 19,778 and 42,916

Step by Step Solution

1. Step 1: Write the proportion equation
   19,778 : 42,916 = 42,916 : x
2. Step 2: Convert to fraction form
   19,778/42,916 = 42,916/x
3. Step 3: Cross multiply
   19,778x = 42,916 × 42,916
4. Step 4: Simplify right side
   19,778x = 1,841,783,056
5. Step 5: Solve for x
   x = 1,841,783,056/19,778
6. Step 6: Final answer
   x = 93,122.82