Finding the Third Proportional to 90,892.25 and 190,136.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,892.25 : 190,136.50 = 190,136.50 : x
2. Step 2: Convert to fraction form
   90,892.25/190,136.50 = 190,136.50/x
3. Step 3: Cross multiply
   90,892.25x = 190,136.50 × 190,136.50
4. Step 4: Simplify right side
   90,892.25x = 36,151,888,632.25
5. Step 5: Solve for x
   x = 36,151,888,632.25/90,892.25
6. Step 6: Final answer
   x = 397,744.46