Finding the Third Proportional to 123,030 and 268,294.50

Step by Step Solution

1. Step 1: Write the proportion equation
   123,030 : 268,294.50 = 268,294.50 : x
2. Step 2: Convert to fraction form
   123,030/268,294.50 = 268,294.50/x
3. Step 3: Cross multiply
   123,030x = 268,294.50 × 268,294.50
4. Step 4: Simplify right side
   123,030x = 71,981,938,730.25
5. Step 5: Solve for x
   x = 71,981,938,730.25/123,030
6. Step 6: Final answer
   x = 585,076.31