Finding the Third Proportional to 78,272 and 171,560

Step by Step Solution

1. Step 1: Write the proportion equation
   78,272 : 171,560 = 171,560 : x
2. Step 2: Convert to fraction form
   78,272/171,560 = 171,560/x
3. Step 3: Cross multiply
   78,272x = 171,560 × 171,560
4. Step 4: Simplify right side
   78,272x = 29,432,833,600
5. Step 5: Solve for x
   x = 29,432,833,600/78,272
6. Step 6: Final answer
   x = 376,032.73