Finding the Third Proportional to 430,641 and 661,027.50

Step by Step Solution

1. Step 1: Write the proportion equation
   430,641 : 661,027.50 = 661,027.50 : x
2. Step 2: Convert to fraction form
   430,641/661,027.50 = 661,027.50/x
3. Step 3: Cross multiply
   430,641x = 661,027.50 × 661,027.50
4. Step 4: Simplify right side
   430,641x = 436,957,355,756.25
5. Step 5: Solve for x
   x = 436,957,355,756.25/430,641
6. Step 6: Final answer
   x = 1,014,667.33