Finding the Third Proportional to 155,607 and 247,018.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,607 : 247,018.50 = 247,018.50 : x
2. Step 2: Convert to fraction form
   155,607/247,018.50 = 247,018.50/x
3. Step 3: Cross multiply
   155,607x = 247,018.50 × 247,018.50
4. Step 4: Simplify right side
   155,607x = 61,018,139,342.25
5. Step 5: Solve for x
   x = 61,018,139,342.25/155,607
6. Step 6: Final answer
   x = 392,129.78