Finding the Third Proportional to 34,355 and 72,399

Step by Step Solution

1. Step 1: Write the proportion equation
   34,355 : 72,399 = 72,399 : x
2. Step 2: Convert to fraction form
   34,355/72,399 = 72,399/x
3. Step 3: Cross multiply
   34,355x = 72,399 × 72,399
4. Step 4: Simplify right side
   34,355x = 5,241,615,201
5. Step 5: Solve for x
   x = 5,241,615,201/34,355
6. Step 6: Final answer
   x = 152,572.12