Finding the Third Proportional to 34,158 and 72,219

Step by Step Solution

1. Step 1: Write the proportion equation
   34,158 : 72,219 = 72,219 : x
2. Step 2: Convert to fraction form
   34,158/72,219 = 72,219/x
3. Step 3: Cross multiply
   34,158x = 72,219 × 72,219
4. Step 4: Simplify right side
   34,158x = 5,215,583,961
5. Step 5: Solve for x
   x = 5,215,583,961/34,158
6. Step 6: Final answer
   x = 152,689.97