Finding the Third Proportional to 28,103 and 42,340

Step by Step Solution

1. Step 1: Write the proportion equation
   28,103 : 42,340 = 42,340 : x
2. Step 2: Convert to fraction form
   28,103/42,340 = 42,340/x
3. Step 3: Cross multiply
   28,103x = 42,340 × 42,340
4. Step 4: Simplify right side
   28,103x = 1,792,675,600
5. Step 5: Solve for x
   x = 1,792,675,600/28,103
6. Step 6: Final answer
   x = 63,789.47