Finding the Third Proportional to 429,146.50 and 649,242

Step by Step Solution

1. Step 1: Write the proportion equation
   429,146.50 : 649,242 = 649,242 : x
2. Step 2: Convert to fraction form
   429,146.50/649,242 = 649,242/x
3. Step 3: Cross multiply
   429,146.50x = 649,242 × 649,242
4. Step 4: Simplify right side
   429,146.50x = 421,515,174,564
5. Step 5: Solve for x
   x = 421,515,174,564/429,146.50
6. Step 6: Final answer
   x = 982,217.44