Finding the Third Proportional to 19,978 and 43,412

Step by Step Solution

1. Step 1: Write the proportion equation
   19,978 : 43,412 = 43,412 : x
2. Step 2: Convert to fraction form
   19,978/43,412 = 43,412/x
3. Step 3: Cross multiply
   19,978x = 43,412 × 43,412
4. Step 4: Simplify right side
   19,978x = 1,884,601,744
5. Step 5: Solve for x
   x = 1,884,601,744/19,978
6. Step 6: Final answer
   x = 94,333.85