Finding the Third Proportional to 498,189.25 and 699,058

Step by Step Solution

1. Step 1: Write the proportion equation
   498,189.25 : 699,058 = 699,058 : x
2. Step 2: Convert to fraction form
   498,189.25/699,058 = 699,058/x
3. Step 3: Cross multiply
   498,189.25x = 699,058 × 699,058
4. Step 4: Simplify right side
   498,189.25x = 488,682,087,364
5. Step 5: Solve for x
   x = 488,682,087,364/498,189.25
6. Step 6: Final answer
   x = 980,916.56