Finding the Third Proportional to 81,448 and 131,426

Step by Step Solution

1. Step 1: Write the proportion equation
   81,448 : 131,426 = 131,426 : x
2. Step 2: Convert to fraction form
   81,448/131,426 = 131,426/x
3. Step 3: Cross multiply
   81,448x = 131,426 × 131,426
4. Step 4: Simplify right side
   81,448x = 17,272,793,476
5. Step 5: Solve for x
   x = 17,272,793,476/81,448
6. Step 6: Final answer
   x = 212,071.43