Finding the Third Proportional to 9,556,765,973 and 13,287,919,186

Step by Step Solution

1. Step 1: Write the proportion equation
   9,556,765,973 : 13,287,919,186 = 13,287,919,186 : x
2. Step 2: Convert to fraction form
   9,556,765,973/13,287,919,186 = 13,287,919,186/x
3. Step 3: Cross multiply
   9,556,765,973x = 13,287,919,186 × 13,287,919,186
4. Step 4: Simplify right side
   9,556,765,973x = 176,568,796,293,666,897,920
5. Step 5: Solve for x
   x = 176,568,796,293,666,897,920/9,556,765,973
6. Step 6: Final answer
   x = 18,475,789,487.00