Finding the Third Proportional to 72,389 and 112,080

Step by Step Solution

1. Step 1: Write the proportion equation
   72,389 : 112,080 = 112,080 : x
2. Step 2: Convert to fraction form
   72,389/112,080 = 112,080/x
3. Step 3: Cross multiply
   72,389x = 112,080 × 112,080
4. Step 4: Simplify right side
   72,389x = 12,561,926,400
5. Step 5: Solve for x
   x = 12,561,926,400/72,389
6. Step 6: Final answer
   x = 173,533.64