Finding the Third Proportional to 31,280,856 and 68,122,740

Step by Step Solution

1. Step 1: Write the proportion equation
   31,280,856 : 68,122,740 = 68,122,740 : x
2. Step 2: Convert to fraction form
   31,280,856/68,122,740 = 68,122,740/x
3. Step 3: Cross multiply
   31,280,856x = 68,122,740 × 68,122,740
4. Step 4: Simplify right side
   31,280,856x = 4,640,707,705,107,600
5. Step 5: Solve for x
   x = 4,640,707,705,107,600/31,280,856
6. Step 6: Final answer
   x = 148,356,160.88