Finding the Third Proportional to 65,420,113 and 142,722,919

Step by Step Solution

1. Step 1: Write the proportion equation
   65,420,113 : 142,722,919 = 142,722,919 : x
2. Step 2: Convert to fraction form
   65,420,113/142,722,919 = 142,722,919/x
3. Step 3: Cross multiply
   65,420,113x = 142,722,919 × 142,722,919
4. Step 4: Simplify right side
   65,420,113x = 20,369,831,607,880,560
5. Step 5: Solve for x
   x = 20,369,831,607,880,560/65,420,113
6. Step 6: Final answer
   x = 311,369,557.06