Finding the Third Proportional to 40,621.50 and 56,720.25

Step by Step Solution

1. Step 1: Write the proportion equation
   40,621.50 : 56,720.25 = 56,720.25 : x
2. Step 2: Convert to fraction form
   40,621.50/56,720.25 = 56,720.25/x
3. Step 3: Cross multiply
   40,621.50x = 56,720.25 × 56,720.25
4. Step 4: Simplify right side
   40,621.50x = 3,217,186,760.06
5. Step 5: Solve for x
   x = 3,217,186,760.06/40,621.50
6. Step 6: Final answer
   x = 79,199.11