Finding the Third Proportional to 28,078.50 and 42,410.25

Step by Step Solution

1. Step 1: Write the proportion equation
   28,078.50 : 42,410.25 = 42,410.25 : x
2. Step 2: Convert to fraction form
   28,078.50/42,410.25 = 42,410.25/x
3. Step 3: Cross multiply
   28,078.50x = 42,410.25 × 42,410.25
4. Step 4: Simplify right side
   28,078.50x = 1,798,629,305.06
5. Step 5: Solve for x
   x = 1,798,629,305.06/28,078.50
6. Step 6: Final answer
   x = 64,057.17