Finding the Third Proportional to 85,718.25 and 187,272

Step by Step Solution

1. Step 1: Write the proportion equation
   85,718.25 : 187,272 = 187,272 : x
2. Step 2: Convert to fraction form
   85,718.25/187,272 = 187,272/x
3. Step 3: Cross multiply
   85,718.25x = 187,272 × 187,272
4. Step 4: Simplify right side
   85,718.25x = 35,070,801,984
5. Step 5: Solve for x
   x = 35,070,801,984/85,718.25
6. Step 6: Final answer
   x = 409,140.43