Finding the Third Proportional to 430,659 and 661,054.50

Step by Step Solution

1. Step 1: Write the proportion equation
   430,659 : 661,054.50 = 661,054.50 : x
2. Step 2: Convert to fraction form
   430,659/661,054.50 = 661,054.50/x
3. Step 3: Cross multiply
   430,659x = 661,054.50 × 661,054.50
4. Step 4: Simplify right side
   430,659x = 436,993,051,970.25
5. Step 5: Solve for x
   x = 436,993,051,970.25/430,659
6. Step 6: Final answer
   x = 1,014,707.81