Finding the Third Proportional to 28,400 and 42,998

Step by Step Solution

1. Step 1: Write the proportion equation
   28,400 : 42,998 = 42,998 : x
2. Step 2: Convert to fraction form
   28,400/42,998 = 42,998/x
3. Step 3: Cross multiply
   28,400x = 42,998 × 42,998
4. Step 4: Simplify right side
   28,400x = 1,848,828,004
5. Step 5: Solve for x
   x = 1,848,828,004/28,400
6. Step 6: Final answer
   x = 65,099.58