Finding the Third Proportional to 9,142,540 and 19,661,000

Step by Step Solution

1. Step 1: Write the proportion equation
   9,142,540 : 19,661,000 = 19,661,000 : x
2. Step 2: Convert to fraction form
   9,142,540/19,661,000 = 19,661,000/x
3. Step 3: Cross multiply
   9,142,540x = 19,661,000 × 19,661,000
4. Step 4: Simplify right side
   9,142,540x = 386,554,921,000,000
5. Step 5: Solve for x
   x = 386,554,921,000,000/9,142,540
6. Step 6: Final answer
   x = 42,280,911.10