Finding the Third Proportional to 31,510,758 and 68,399,372

Step by Step Solution

1. Step 1: Write the proportion equation
   31,510,758 : 68,399,372 = 68,399,372 : x
2. Step 2: Convert to fraction form
   31,510,758/68,399,372 = 68,399,372/x
3. Step 3: Cross multiply
   31,510,758x = 68,399,372 × 68,399,372
4. Step 4: Simplify right side
   31,510,758x = 4,678,474,089,994,384
5. Step 5: Solve for x
   x = 4,678,474,089,994,384/31,510,758
6. Step 6: Final answer
   x = 148,472,280.17