Finding the Third Proportional to 8,513,097,769.88 and 19,890,438,411.38

Step by Step Solution

1. Step 1: Write the proportion equation
   8,513,097,769.88 : 19,890,438,411.38 = 19,890,438,411.38 : x
2. Step 2: Convert to fraction form
   8,513,097,769.88/19,890,438,411.38 = 19,890,438,411.38/x
3. Step 3: Cross multiply
   8,513,097,769.88x = 19,890,438,411.38 × 19,890,438,411.38
4. Step 4: Simplify right side
   8,513,097,769.88x = 395,629,540,196,702,027,776
5. Step 5: Solve for x
   x = 395,629,540,196,702,027,776/8,513,097,769.88
6. Step 6: Final answer
   x = 46,473,040,823.84