Finding the Third Proportional to 12,030,741,776 and 18,391,903,616

Step by Step Solution

1. Step 1: Write the proportion equation
   12,030,741,776 : 18,391,903,616 = 18,391,903,616 : x
2. Step 2: Convert to fraction form
   12,030,741,776/18,391,903,616 = 18,391,903,616/x
3. Step 3: Cross multiply
   12,030,741,776x = 18,391,903,616 × 18,391,903,616
4. Step 4: Simplify right side
   12,030,741,776x = 338,262,118,620,233,859,072
5. Step 5: Solve for x
   x = 338,262,118,620,233,859,072/12,030,741,776
6. Step 6: Final answer
   x = 28,116,480,672.46