Finding the Third Proportional to 72,858 and 112,402

Step by Step Solution

1. Step 1: Write the proportion equation
   72,858 : 112,402 = 112,402 : x
2. Step 2: Convert to fraction form
   72,858/112,402 = 112,402/x
3. Step 3: Cross multiply
   72,858x = 112,402 × 112,402
4. Step 4: Simplify right side
   72,858x = 12,634,209,604
5. Step 5: Solve for x
   x = 12,634,209,604/72,858
6. Step 6: Final answer
   x = 173,408.68