Finding the Third Proportional to 34,423 and 72,980

Step by Step Solution

1. Step 1: Write the proportion equation
   34,423 : 72,980 = 72,980 : x
2. Step 2: Convert to fraction form
   34,423/72,980 = 72,980/x
3. Step 3: Cross multiply
   34,423x = 72,980 × 72,980
4. Step 4: Simplify right side
   34,423x = 5,326,080,400
5. Step 5: Solve for x
   x = 5,326,080,400/34,423
6. Step 6: Final answer
   x = 154,724.47