Finding the Third Proportional to 34,456 and 72,612

Step by Step Solution

1. Step 1: Write the proportion equation
   34,456 : 72,612 = 72,612 : x
2. Step 2: Convert to fraction form
   34,456/72,612 = 72,612/x
3. Step 3: Cross multiply
   34,456x = 72,612 × 72,612
4. Step 4: Simplify right side
   34,456x = 5,272,502,544
5. Step 5: Solve for x
   x = 5,272,502,544/34,456
6. Step 6: Final answer
   x = 153,021.32