Finding the Third Proportional to 196,891.50 and 429,420

Step by Step Solution

1. Step 1: Write the proportion equation
   196,891.50 : 429,420 = 429,420 : x
2. Step 2: Convert to fraction form
   196,891.50/429,420 = 429,420/x
3. Step 3: Cross multiply
   196,891.50x = 429,420 × 429,420
4. Step 4: Simplify right side
   196,891.50x = 184,401,536,400
5. Step 5: Solve for x
   x = 184,401,536,400/196,891.50
6. Step 6: Final answer
   x = 936,564.23