Finding the Third Proportional to 340,830 and 738,085.50

Step by Step Solution

1. Step 1: Write the proportion equation
   340,830 : 738,085.50 = 738,085.50 : x
2. Step 2: Convert to fraction form
   340,830/738,085.50 = 738,085.50/x
3. Step 3: Cross multiply
   340,830x = 738,085.50 × 738,085.50
4. Step 4: Simplify right side
   340,830x = 544,770,205,310.25
5. Step 5: Solve for x
   x = 544,770,205,310.25/340,830
6. Step 6: Final answer
   x = 1,598,363.42