Finding the Third Proportional to 423,197 and 574,105.50

Step by Step Solution

1. Step 1: Write the proportion equation
   423,197 : 574,105.50 = 574,105.50 : x
2. Step 2: Convert to fraction form
   423,197/574,105.50 = 574,105.50/x
3. Step 3: Cross multiply
   423,197x = 574,105.50 × 574,105.50
4. Step 4: Simplify right side
   423,197x = 329,597,125,130.25
5. Step 5: Solve for x
   x = 329,597,125,130.25/423,197
6. Step 6: Final answer
   x = 778,826.71