Finding the Third Proportional to 31,225,990 and 67,664,667

Step by Step Solution

1. Step 1: Write the proportion equation
   31,225,990 : 67,664,667 = 67,664,667 : x
2. Step 2: Convert to fraction form
   31,225,990/67,664,667 = 67,664,667/x
3. Step 3: Cross multiply
   31,225,990x = 67,664,667 × 67,664,667
4. Step 4: Simplify right side
   31,225,990x = 4,578,507,160,220,889
5. Step 5: Solve for x
   x = 4,578,507,160,220,889/31,225,990
6. Step 6: Final answer
   x = 146,624,883.96