Finding the Third Proportional to 31,142,826 and 68,150,647.75

Step by Step Solution

1. Step 1: Write the proportion equation
   31,142,826 : 68,150,647.75 = 68,150,647.75 : x
2. Step 2: Convert to fraction form
   31,142,826/68,150,647.75 = 68,150,647.75/x
3. Step 3: Cross multiply
   31,142,826x = 68,150,647.75 × 68,150,647.75
4. Step 4: Simplify right side
   31,142,826x = 4,644,510,788,744,580
5. Step 5: Solve for x
   x = 4,644,510,788,744,580/31,142,826
6. Step 6: Final answer
   x = 149,135,816.66