Finding the Third Proportional to 42,778.50 and 103,058.25

Step by Step Solution

1. Step 1: Write the proportion equation
   42,778.50 : 103,058.25 = 103,058.25 : x
2. Step 2: Convert to fraction form
   42,778.50/103,058.25 = 103,058.25/x
3. Step 3: Cross multiply
   42,778.50x = 103,058.25 × 103,058.25
4. Step 4: Simplify right side
   42,778.50x = 10,621,002,893.06
5. Step 5: Solve for x
   x = 10,621,002,893.06/42,778.50
6. Step 6: Final answer
   x = 248,278.99