Finding the Third Proportional to 89,300 and 187,788

Step by Step Solution

1. Step 1: Write the proportion equation
   89,300 : 187,788 = 187,788 : x
2. Step 2: Convert to fraction form
   89,300/187,788 = 187,788/x
3. Step 3: Cross multiply
   89,300x = 187,788 × 187,788
4. Step 4: Simplify right side
   89,300x = 35,264,332,944
5. Step 5: Solve for x
   x = 35,264,332,944/89,300
6. Step 6: Final answer
   x = 394,897.35