Finding the Third Proportional to 21,477,638,562 and 43,567,685,382

Step by Step Solution

1. Step 1: Write the proportion equation
   21,477,638,562 : 43,567,685,382 = 43,567,685,382 : x
2. Step 2: Convert to fraction form
   21,477,638,562/43,567,685,382 = 43,567,685,382/x
3. Step 3: Cross multiply
   21,477,638,562x = 43,567,685,382 × 43,567,685,382
4. Step 4: Simplify right side
   21,477,638,562x = 1,898,143,209,544,936,587,264
5. Step 5: Solve for x
   x = 1,898,143,209,544,936,587,264/21,477,638,562
6. Step 6: Final answer
   x = 88,377,649,342.85