Finding the Third Proportional to 28,590 and 43,978

Step by Step Solution

1. Step 1: Write the proportion equation
   28,590 : 43,978 = 43,978 : x
2. Step 2: Convert to fraction form
   28,590/43,978 = 43,978/x
3. Step 3: Cross multiply
   28,590x = 43,978 × 43,978
4. Step 4: Simplify right side
   28,590x = 1,934,064,484
5. Step 5: Solve for x
   x = 1,934,064,484/28,590
6. Step 6: Final answer
   x = 67,648.29