Finding the Third Proportional to 40,915 and 55,531.50

Step by Step Solution

1. Step 1: Write the proportion equation
   40,915 : 55,531.50 = 55,531.50 : x
2. Step 2: Convert to fraction form
   40,915/55,531.50 = 55,531.50/x
3. Step 3: Cross multiply
   40,915x = 55,531.50 × 55,531.50
4. Step 4: Simplify right side
   40,915x = 3,083,747,492.25
5. Step 5: Solve for x
   x = 3,083,747,492.25/40,915
6. Step 6: Final answer
   x = 75,369.61