Finding the Third Proportional to 90,621 and 195,043.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,621 : 195,043.50 = 195,043.50 : x
2. Step 2: Convert to fraction form
   90,621/195,043.50 = 195,043.50/x
3. Step 3: Cross multiply
   90,621x = 195,043.50 × 195,043.50
4. Step 4: Simplify right side
   90,621x = 38,041,966,892.25
5. Step 5: Solve for x
   x = 38,041,966,892.25/90,621
6. Step 6: Final answer
   x = 419,791.96