Finding the Third Proportional to 155,907 and 342,499.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,907 : 342,499.50 = 342,499.50 : x
2. Step 2: Convert to fraction form
   155,907/342,499.50 = 342,499.50/x
3. Step 3: Cross multiply
   155,907x = 342,499.50 × 342,499.50
4. Step 4: Simplify right side
   155,907x = 117,305,907,500.25
5. Step 5: Solve for x
   x = 117,305,907,500.25/155,907
6. Step 6: Final answer
   x = 752,409.50