Finding the Third Proportional to 135,669 and 298,405.50

Step by Step Solution

1. Step 1: Write the proportion equation
   135,669 : 298,405.50 = 298,405.50 : x
2. Step 2: Convert to fraction form
   135,669/298,405.50 = 298,405.50/x
3. Step 3: Cross multiply
   135,669x = 298,405.50 × 298,405.50
4. Step 4: Simplify right side
   135,669x = 89,045,842,430.25
5. Step 5: Solve for x
   x = 89,045,842,430.25/135,669
6. Step 6: Final answer
   x = 656,346.27