Finding the Third Proportional to 9,837,790,124 and 21,243,186,683

Step by Step Solution

1. Step 1: Write the proportion equation
   9,837,790,124 : 21,243,186,683 = 21,243,186,683 : x
2. Step 2: Convert to fraction form
   9,837,790,124/21,243,186,683 = 21,243,186,683/x
3. Step 3: Cross multiply
   9,837,790,124x = 21,243,186,683 × 21,243,186,683
4. Step 4: Simplify right side
   9,837,790,124x = 451,272,980,448,788,545,536
5. Step 5: Solve for x
   x = 451,272,980,448,788,545,536/9,837,790,124
6. Step 6: Final answer
   x = 45,871,377,083.75