Finding the Third Proportional to 30,423 and 45,510

Step by Step Solution

1. Step 1: Write the proportion equation
   30,423 : 45,510 = 45,510 : x
2. Step 2: Convert to fraction form
   30,423/45,510 = 45,510/x
3. Step 3: Cross multiply
   30,423x = 45,510 × 45,510
4. Step 4: Simplify right side
   30,423x = 2,071,160,100
5. Step 5: Solve for x
   x = 2,071,160,100/30,423
6. Step 6: Final answer
   x = 68,078.76