Finding the Third Proportional to 194,320 and 421,830.50

Step by Step Solution

1. Step 1: Write the proportion equation
   194,320 : 421,830.50 = 421,830.50 : x
2. Step 2: Convert to fraction form
   194,320/421,830.50 = 421,830.50/x
3. Step 3: Cross multiply
   194,320x = 421,830.50 × 421,830.50
4. Step 4: Simplify right side
   194,320x = 177,940,970,730.25
5. Step 5: Solve for x
   x = 177,940,970,730.25/194,320
6. Step 6: Final answer
   x = 915,711.05