Finding the Third Proportional to 155,220 and 279,607.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,220 : 279,607.50 = 279,607.50 : x
2. Step 2: Convert to fraction form
   155,220/279,607.50 = 279,607.50/x
3. Step 3: Cross multiply
   155,220x = 279,607.50 × 279,607.50
4. Step 4: Simplify right side
   155,220x = 78,180,354,056.25
5. Step 5: Solve for x
   x = 78,180,354,056.25/155,220
6. Step 6: Final answer
   x = 503,674.49