Finding the Third Proportional to 40,249 and 59,139

Step by Step Solution

1. Step 1: Write the proportion equation
   40,249 : 59,139 = 59,139 : x
2. Step 2: Convert to fraction form
   40,249/59,139 = 59,139/x
3. Step 3: Cross multiply
   40,249x = 59,139 × 59,139
4. Step 4: Simplify right side
   40,249x = 3,497,421,321
5. Step 5: Solve for x
   x = 3,497,421,321/40,249
6. Step 6: Final answer
   x = 86,894.61