Finding the Third Proportional to 423,199.50 and 574,110

Step by Step Solution

1. Step 1: Write the proportion equation
   423,199.50 : 574,110 = 574,110 : x
2. Step 2: Convert to fraction form
   423,199.50/574,110 = 574,110/x
3. Step 3: Cross multiply
   423,199.50x = 574,110 × 574,110
4. Step 4: Simplify right side
   423,199.50x = 329,602,292,100
5. Step 5: Solve for x
   x = 329,602,292,100/423,199.50
6. Step 6: Final answer
   x = 778,834.31