Finding the Third Proportional to 31,311,900 and 63,504,216

Step by Step Solution

1. Step 1: Write the proportion equation
   31,311,900 : 63,504,216 = 63,504,216 : x
2. Step 2: Convert to fraction form
   31,311,900/63,504,216 = 63,504,216/x
3. Step 3: Cross multiply
   31,311,900x = 63,504,216 × 63,504,216
4. Step 4: Simplify right side
   31,311,900x = 4,032,785,449,774,656
5. Step 5: Solve for x
   x = 4,032,785,449,774,656/31,311,900
6. Step 6: Final answer
   x = 128,794,019.20