Finding the Third Proportional to 9,837,790,113.50 and 21,243,186,662.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,837,790,113.50 : 21,243,186,662.50 = 21,243,186,662.50 : x
2. Step 2: Convert to fraction form
   9,837,790,113.50/21,243,186,662.50 = 21,243,186,662.50/x
3. Step 3: Cross multiply
   9,837,790,113.50x = 21,243,186,662.50 × 21,243,186,662.50
4. Step 4: Simplify right side
   9,837,790,113.50x = 451,272,979,577,817,858,048
5. Step 5: Solve for x
   x = 451,272,979,577,817,858,048/9,837,790,113.50
6. Step 6: Final answer
   x = 45,871,377,044.18