Finding the Third Proportional to 155,910 and 342,505.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,910 : 342,505.50 = 342,505.50 : x
2. Step 2: Convert to fraction form
   155,910/342,505.50 = 342,505.50/x
3. Step 3: Cross multiply
   155,910x = 342,505.50 × 342,505.50
4. Step 4: Simplify right side
   155,910x = 117,310,017,530.25
5. Step 5: Solve for x
   x = 117,310,017,530.25/155,910
6. Step 6: Final answer
   x = 752,421.38