Finding the Third Proportional to 42,280 and 89,272

Step by Step Solution

1. Step 1: Write the proportion equation
   42,280 : 89,272 = 89,272 : x
2. Step 2: Convert to fraction form
   42,280/89,272 = 89,272/x
3. Step 3: Cross multiply
   42,280x = 89,272 × 89,272
4. Step 4: Simplify right side
   42,280x = 7,969,489,984
5. Step 5: Solve for x
   x = 7,969,489,984/42,280
6. Step 6: Final answer
   x = 188,493.14