Finding the Third Proportional to 61,180 and 86,156

Step by Step Solution

1. Step 1: Write the proportion equation
   61,180 : 86,156 = 86,156 : x
2. Step 2: Convert to fraction form
   61,180/86,156 = 86,156/x
3. Step 3: Cross multiply
   61,180x = 86,156 × 86,156
4. Step 4: Simplify right side
   61,180x = 7,422,856,336
5. Step 5: Solve for x
   x = 7,422,856,336/61,180
6. Step 6: Final answer
   x = 121,328.15