Finding the Third Proportional to 45,292.50 and 74,857.50

Step by Step Solution

1. Step 1: Write the proportion equation
   45,292.50 : 74,857.50 = 74,857.50 : x
2. Step 2: Convert to fraction form
   45,292.50/74,857.50 = 74,857.50/x
3. Step 3: Cross multiply
   45,292.50x = 74,857.50 × 74,857.50
4. Step 4: Simplify right side
   45,292.50x = 5,603,645,306.25
5. Step 5: Solve for x
   x = 5,603,645,306.25/45,292.50
6. Step 6: Final answer
   x = 123,721.26