Finding the Third Proportional to 301,081.50 and 661,209

Step by Step Solution

1. Step 1: Write the proportion equation
   301,081.50 : 661,209 = 661,209 : x
2. Step 2: Convert to fraction form
   301,081.50/661,209 = 661,209/x
3. Step 3: Cross multiply
   301,081.50x = 661,209 × 661,209
4. Step 4: Simplify right side
   301,081.50x = 437,197,341,681
5. Step 5: Solve for x
   x = 437,197,341,681/301,081.50
6. Step 6: Final answer
   x = 1,452,089.69