Finding the Third Proportional to 342,796.50 and 744,561

Step by Step Solution

1. Step 1: Write the proportion equation
   342,796.50 : 744,561 = 744,561 : x
2. Step 2: Convert to fraction form
   342,796.50/744,561 = 744,561/x
3. Step 3: Cross multiply
   342,796.50x = 744,561 × 744,561
4. Step 4: Simplify right side
   342,796.50x = 554,371,082,721
5. Step 5: Solve for x
   x = 554,371,082,721/342,796.50
6. Step 6: Final answer
   x = 1,617,201.70