Finding the Third Proportional to 76,851 and 103,612

Step by Step Solution

1. Step 1: Write the proportion equation
   76,851 : 103,612 = 103,612 : x
2. Step 2: Convert to fraction form
   76,851/103,612 = 103,612/x
3. Step 3: Cross multiply
   76,851x = 103,612 × 103,612
4. Step 4: Simplify right side
   76,851x = 10,735,446,544
5. Step 5: Solve for x
   x = 10,735,446,544/76,851
6. Step 6: Final answer
   x = 139,691.70