Finding the Third Proportional to 124,230 and 268,129.50

Step by Step Solution

1. Step 1: Write the proportion equation
   124,230 : 268,129.50 = 268,129.50 : x
2. Step 2: Convert to fraction form
   124,230/268,129.50 = 268,129.50/x
3. Step 3: Cross multiply
   124,230x = 268,129.50 × 268,129.50
4. Step 4: Simplify right side
   124,230x = 71,893,428,770.25
5. Step 5: Solve for x
   x = 71,893,428,770.25/124,230
6. Step 6: Final answer
   x = 578,712.30