Finding the Third Proportional to 40,776 and 57,420.50

Step by Step Solution

1. Step 1: Write the proportion equation
   40,776 : 57,420.50 = 57,420.50 : x
2. Step 2: Convert to fraction form
   40,776/57,420.50 = 57,420.50/x
3. Step 3: Cross multiply
   40,776x = 57,420.50 × 57,420.50
4. Step 4: Simplify right side
   40,776x = 3,297,113,820.25
5. Step 5: Solve for x
   x = 3,297,113,820.25/40,776
6. Step 6: Final answer
   x = 80,859.18