Finding the Third Proportional to 28,139.25 and 42,924

Step by Step Solution

1. Step 1: Write the proportion equation
   28,139.25 : 42,924 = 42,924 : x
2. Step 2: Convert to fraction form
   28,139.25/42,924 = 42,924/x
3. Step 3: Cross multiply
   28,139.25x = 42,924 × 42,924
4. Step 4: Simplify right side
   28,139.25x = 1,842,469,776
5. Step 5: Solve for x
   x = 1,842,469,776/28,139.25
6. Step 6: Final answer
   x = 65,476.86