Finding the Third Proportional to 155,430 and 240,730.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,430 : 240,730.50 = 240,730.50 : x
2. Step 2: Convert to fraction form
   155,430/240,730.50 = 240,730.50/x
3. Step 3: Cross multiply
   155,430x = 240,730.50 × 240,730.50
4. Step 4: Simplify right side
   155,430x = 57,951,173,630.25
5. Step 5: Solve for x
   x = 57,951,173,630.25/155,430
6. Step 6: Final answer
   x = 372,844.20