Finding the Third Proportional to 340,821 and 738,064.50

Step by Step Solution

1. Step 1: Write the proportion equation
   340,821 : 738,064.50 = 738,064.50 : x
2. Step 2: Convert to fraction form
   340,821/738,064.50 = 738,064.50/x
3. Step 3: Cross multiply
   340,821x = 738,064.50 × 738,064.50
4. Step 4: Simplify right side
   340,821x = 544,739,206,160.25
5. Step 5: Solve for x
   x = 544,739,206,160.25/340,821
6. Step 6: Final answer
   x = 1,598,314.68