Finding the Third Proportional to 87,308 and 190,608.50

Step by Step Solution

1. Step 1: Write the proportion equation
   87,308 : 190,608.50 = 190,608.50 : x
2. Step 2: Convert to fraction form
   87,308/190,608.50 = 190,608.50/x
3. Step 3: Cross multiply
   87,308x = 190,608.50 × 190,608.50
4. Step 4: Simplify right side
   87,308x = 36,331,600,272.25
5. Step 5: Solve for x
   x = 36,331,600,272.25/87,308
6. Step 6: Final answer
   x = 416,131.40