Finding the Third Proportional to 31,384,580 and 67,578,372

Step by Step Solution

1. Step 1: Write the proportion equation
   31,384,580 : 67,578,372 = 67,578,372 : x
2. Step 2: Convert to fraction form
   31,384,580/67,578,372 = 67,578,372/x
3. Step 3: Cross multiply
   31,384,580x = 67,578,372 × 67,578,372
4. Step 4: Simplify right side
   31,384,580x = 4,566,836,362,170,384
5. Step 5: Solve for x
   x = 4,566,836,362,170,384/31,384,580
6. Step 6: Final answer
   x = 145,512,106.97