Finding the Third Proportional to 128,906,777 and 204,454,150.50

Step by Step Solution

1. Step 1: Write the proportion equation
   128,906,777 : 204,454,150.50 = 204,454,150.50 : x
2. Step 2: Convert to fraction form
   128,906,777/204,454,150.50 = 204,454,150.50/x
3. Step 3: Cross multiply
   128,906,777x = 204,454,150.50 × 204,454,150.50
4. Step 4: Simplify right side
   128,906,777x = 41,801,499,656,676,648
5. Step 5: Solve for x
   x = 41,801,499,656,676,648/128,906,777
6. Step 6: Final answer
   x = 324,276,974.64