Finding the Third Proportional to 155,428.50 and 340,008

Step by Step Solution

1. Step 1: Write the proportion equation
   155,428.50 : 340,008 = 340,008 : x
2. Step 2: Convert to fraction form
   155,428.50/340,008 = 340,008/x
3. Step 3: Cross multiply
   155,428.50x = 340,008 × 340,008
4. Step 4: Simplify right side
   155,428.50x = 115,605,440,064
5. Step 5: Solve for x
   x = 115,605,440,064/155,428.50
6. Step 6: Final answer
   x = 743,785.34