Finding the Third Proportional to 42,792 and 56,791.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,792 : 56,791.50 = 56,791.50 : x
2. Step 2: Convert to fraction form
   42,792/56,791.50 = 56,791.50/x
3. Step 3: Cross multiply
   42,792x = 56,791.50 × 56,791.50
4. Step 4: Simplify right side
   42,792x = 3,225,274,472.25
5. Step 5: Solve for x
   x = 3,225,274,472.25/42,792
6. Step 6: Final answer
   x = 75,370.97