Finding the Third Proportional to 21,638,608 and 45,691,672

Step by Step Solution

1. Step 1: Write the proportion equation
   21,638,608 : 45,691,672 = 45,691,672 : x
2. Step 2: Convert to fraction form
   21,638,608/45,691,672 = 45,691,672/x
3. Step 3: Cross multiply
   21,638,608x = 45,691,672 × 45,691,672
4. Step 4: Simplify right side
   21,638,608x = 2,087,728,890,155,584
5. Step 5: Solve for x
   x = 2,087,728,890,155,584/21,638,608
6. Step 6: Final answer
   x = 96,481,663.25