Finding the Third Proportional to 90,388 and 187,944.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,388 : 187,944.50 = 187,944.50 : x
2. Step 2: Convert to fraction form
   90,388/187,944.50 = 187,944.50/x
3. Step 3: Cross multiply
   90,388x = 187,944.50 × 187,944.50
4. Step 4: Simplify right side
   90,388x = 35,323,135,080.25
5. Step 5: Solve for x
   x = 35,323,135,080.25/90,388
6. Step 6: Final answer
   x = 390,794.52