Finding the Third Proportional to 20,632,455 and 42,939,495

Step by Step Solution

1. Step 1: Write the proportion equation
   20,632,455 : 42,939,495 = 42,939,495 : x
2. Step 2: Convert to fraction form
   20,632,455/42,939,495 = 42,939,495/x
3. Step 3: Cross multiply
   20,632,455x = 42,939,495 × 42,939,495
4. Step 4: Simplify right side
   20,632,455x = 1,843,800,230,855,025
5. Step 5: Solve for x
   x = 1,843,800,230,855,025/20,632,455
6. Step 6: Final answer
   x = 89,364,073.78