Finding the Third Proportional to 155,790 and 340,429.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,790 : 340,429.50 = 340,429.50 : x
2. Step 2: Convert to fraction form
   155,790/340,429.50 = 340,429.50/x
3. Step 3: Cross multiply
   155,790x = 340,429.50 × 340,429.50
4. Step 4: Simplify right side
   155,790x = 115,892,244,470.25
5. Step 5: Solve for x
   x = 115,892,244,470.25/155,790
6. Step 6: Final answer
   x = 743,900.41