Finding the Third Proportional to 61,158 and 87,253

Step by Step Solution

1. Step 1: Write the proportion equation
   61,158 : 87,253 = 87,253 : x
2. Step 2: Convert to fraction form
   61,158/87,253 = 87,253/x
3. Step 3: Cross multiply
   61,158x = 87,253 × 87,253
4. Step 4: Simplify right side
   61,158x = 7,613,086,009
5. Step 5: Solve for x
   x = 7,613,086,009/61,158
6. Step 6: Final answer
   x = 124,482.26