Finding the Third Proportional to 21,637,645 and 45,689,738

Step by Step Solution

1. Step 1: Write the proportion equation
   21,637,645 : 45,689,738 = 45,689,738 : x
2. Step 2: Convert to fraction form
   21,637,645/45,689,738 = 45,689,738/x
3. Step 3: Cross multiply
   21,637,645x = 45,689,738 × 45,689,738
4. Step 4: Simplify right side
   21,637,645x = 2,087,552,158,508,644
5. Step 5: Solve for x
   x = 2,087,552,158,508,644/21,637,645
6. Step 6: Final answer
   x = 96,477,789.45