Finding the Third Proportional to 21,581,138 and 45,157,468

Step by Step Solution

1. Step 1: Write the proportion equation
   21,581,138 : 45,157,468 = 45,157,468 : x
2. Step 2: Convert to fraction form
   21,581,138/45,157,468 = 45,157,468/x
3. Step 3: Cross multiply
   21,581,138x = 45,157,468 × 45,157,468
4. Step 4: Simplify right side
   21,581,138x = 2,039,196,916,171,024
5. Step 5: Solve for x
   x = 2,039,196,916,171,024/21,581,138
6. Step 6: Final answer
   x = 94,489,776.96