Finding the Third Proportional to 28,699 and 60,871

Step by Step Solution

1. Step 1: Write the proportion equation
   28,699 : 60,871 = 60,871 : x
2. Step 2: Convert to fraction form
   28,699/60,871 = 60,871/x
3. Step 3: Cross multiply
   28,699x = 60,871 × 60,871
4. Step 4: Simplify right side
   28,699x = 3,705,278,641
5. Step 5: Solve for x
   x = 3,705,278,641/28,699
6. Step 6: Final answer
   x = 129,108.28