Finding the Third Proportional to 61,288 and 89,276

Step by Step Solution

1. Step 1: Write the proportion equation
   61,288 : 89,276 = 89,276 : x
2. Step 2: Convert to fraction form
   61,288/89,276 = 89,276/x
3. Step 3: Cross multiply
   61,288x = 89,276 × 89,276
4. Step 4: Simplify right side
   61,288x = 7,970,204,176
5. Step 5: Solve for x
   x = 7,970,204,176/61,288
6. Step 6: Final answer
   x = 130,045.10