Finding the Third Proportional to 12,742,354,666 and 17,717,225,648

Step by Step Solution

1. Step 1: Write the proportion equation
   12,742,354,666 : 17,717,225,648 = 17,717,225,648 : x
2. Step 2: Convert to fraction form
   12,742,354,666/17,717,225,648 = 17,717,225,648/x
3. Step 3: Cross multiply
   12,742,354,666x = 17,717,225,648 × 17,717,225,648
4. Step 4: Simplify right side
   12,742,354,666x = 313,900,084,662,148,988,928
5. Step 5: Solve for x
   x = 313,900,084,662,148,988,928/12,742,354,666
6. Step 6: Final answer
   x = 24,634,386,099.75