Finding the Third Proportional to 425,191.50 and 658,326

Step by Step Solution

1. Step 1: Write the proportion equation
   425,191.50 : 658,326 = 658,326 : x
2. Step 2: Convert to fraction form
   425,191.50/658,326 = 658,326/x
3. Step 3: Cross multiply
   425,191.50x = 658,326 × 658,326
4. Step 4: Simplify right side
   425,191.50x = 433,393,122,276
5. Step 5: Solve for x
   x = 433,393,122,276/425,191.50
6. Step 6: Final answer
   x = 1,019,289.24