Finding the Third Proportional to 429,957 and 661,459.50

Step by Step Solution

1. Step 1: Write the proportion equation
   429,957 : 661,459.50 = 661,459.50 : x
2. Step 2: Convert to fraction form
   429,957/661,459.50 = 661,459.50/x
3. Step 3: Cross multiply
   429,957x = 661,459.50 × 661,459.50
4. Step 4: Simplify right side
   429,957x = 437,528,670,140.25
5. Step 5: Solve for x
   x = 437,528,670,140.25/429,957
6. Step 6: Final answer
   x = 1,017,610.30