Finding the Third Proportional to 122,230 and 264,809.50

Step by Step Solution

1. Step 1: Write the proportion equation
   122,230 : 264,809.50 = 264,809.50 : x
2. Step 2: Convert to fraction form
   122,230/264,809.50 = 264,809.50/x
3. Step 3: Cross multiply
   122,230x = 264,809.50 × 264,809.50
4. Step 4: Simplify right side
   122,230x = 70,124,071,290.25
5. Step 5: Solve for x
   x = 70,124,071,290.25/122,230
6. Step 6: Final answer
   x = 573,705.89