Finding the Third Proportional to 230,618 and 506,639.50

Step by Step Solution

1. Step 1: Write the proportion equation
   230,618 : 506,639.50 = 506,639.50 : x
2. Step 2: Convert to fraction form
   230,618/506,639.50 = 506,639.50/x
3. Step 3: Cross multiply
   230,618x = 506,639.50 × 506,639.50
4. Step 4: Simplify right side
   230,618x = 256,683,582,960.25
5. Step 5: Solve for x
   x = 256,683,582,960.25/230,618
6. Step 6: Final answer
   x = 1,113,024.93