Finding the Third Proportional to 196,276.50 and 423,940.50

Step by Step Solution

1. Step 1: Write the proportion equation
   196,276.50 : 423,940.50 = 423,940.50 : x
2. Step 2: Convert to fraction form
   196,276.50/423,940.50 = 423,940.50/x
3. Step 3: Cross multiply
   196,276.50x = 423,940.50 × 423,940.50
4. Step 4: Simplify right side
   196,276.50x = 179,725,547,540.25
5. Step 5: Solve for x
   x = 179,725,547,540.25/196,276.50
6. Step 6: Final answer
   x = 915,675.32