Finding the Third Proportional to 9,837,790,116 and 21,243,186,667

Step by Step Solution

1. Step 1: Write the proportion equation
   9,837,790,116 : 21,243,186,667 = 21,243,186,667 : x
2. Step 2: Convert to fraction form
   9,837,790,116/21,243,186,667 = 21,243,186,667/x
3. Step 3: Cross multiply
   9,837,790,116x = 21,243,186,667 × 21,243,186,667
4. Step 4: Simplify right side
   9,837,790,116x = 451,272,979,769,006,555,136
5. Step 5: Solve for x
   x = 451,272,979,769,006,555,136/9,837,790,116
6. Step 6: Final answer
   x = 45,871,377,051.95