Finding the Third Proportional to 31,398,510 and 42,408,837

Step by Step Solution

1. Step 1: Write the proportion equation
   31,398,510 : 42,408,837 = 42,408,837 : x
2. Step 2: Convert to fraction form
   31,398,510/42,408,837 = 42,408,837/x
3. Step 3: Cross multiply
   31,398,510x = 42,408,837 × 42,408,837
4. Step 4: Simplify right side
   31,398,510x = 1,798,509,455,692,569
5. Step 5: Solve for x
   x = 1,798,509,455,692,569/31,398,510
6. Step 6: Final answer
   x = 57,280,089.27