Finding the Third Proportional to 59,479 and 86,985

Step by Step Solution

1. Step 1: Write the proportion equation
   59,479 : 86,985 = 86,985 : x
2. Step 2: Convert to fraction form
   59,479/86,985 = 86,985/x
3. Step 3: Cross multiply
   59,479x = 86,985 × 86,985
4. Step 4: Simplify right side
   59,479x = 7,566,390,225
5. Step 5: Solve for x
   x = 7,566,390,225/59,479
6. Step 6: Final answer
   x = 127,211.12