Finding the Third Proportional to 90,929.25 and 197,410.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,929.25 : 197,410.50 = 197,410.50 : x
2. Step 2: Convert to fraction form
   90,929.25/197,410.50 = 197,410.50/x
3. Step 3: Cross multiply
   90,929.25x = 197,410.50 × 197,410.50
4. Step 4: Simplify right side
   90,929.25x = 38,970,905,510.25
5. Step 5: Solve for x
   x = 38,970,905,510.25/90,929.25
6. Step 6: Final answer
   x = 428,584.92