Finding the Third Proportional to 61,388 and 131,488

Step by Step Solution

1. Step 1: Write the proportion equation
   61,388 : 131,488 = 131,488 : x
2. Step 2: Convert to fraction form
   61,388/131,488 = 131,488/x
3. Step 3: Cross multiply
   61,388x = 131,488 × 131,488
4. Step 4: Simplify right side
   61,388x = 17,289,094,144
5. Step 5: Solve for x
   x = 17,289,094,144/61,388
6. Step 6: Final answer
   x = 281,636.38