Finding the Third Proportional to 67,478,871,732 and 140,542,928,664

Step by Step Solution

1. Step 1: Write the proportion equation
   67,478,871,732 : 140,542,928,664 = 140,542,928,664 : x
2. Step 2: Convert to fraction form
   67,478,871,732/140,542,928,664 = 140,542,928,664/x
3. Step 3: Cross multiply
   67,478,871,732x = 140,542,928,664 × 140,542,928,664
4. Step 4: Simplify right side
   67,478,871,732x = 19,752,314,797,454,193,065,984
5. Step 5: Solve for x
   x = 19,752,314,797,454,193,065,984/67,478,871,732
6. Step 6: Final answer
   x = 292,718,510,112.36